Use path in webpack config to assure cross-platform compatibility.

webpack.config.dev.js

@@ -13,11 +13,11 @@ export default {
     // must be first entry to properly set public path
     './src/webpack-public-path',
     'webpack-hot-middleware/client?reload=true',
-    './src/index'
+    path.resolve(__dirname, 'src/index.js') // Defining path seems necessary for this to work consistently on Windows machines.
   ],
   target: 'web', // necessary per https://webpack.github.io/docs/testing.html#compile-and-test
   output: {
-    path: `${__dirname}/src`, // Note: Physical files are only output by the production build task `npm run build`.
+    path: path.resolve(__dirname, 'dist'), // Note: Physical files are only output by the production build task `npm run build`.
     publicPath: '/',
     filename: 'bundle.js'
   },

webpack.config.prod.js

@@ -5,6 +5,7 @@ import ExtractTextPlugin from 'extract-text-webpack-plugin';
 import WebpackMd5Hash from 'webpack-md5-hash';
 import HtmlWebpackPlugin from 'html-webpack-plugin';
 import autoprefixer from 'autoprefixer';
+import path from 'path';
 
 const GLOBALS = {
   'process.env.NODE_ENV': JSON.stringify('production'),
@@ -18,10 +19,10 @@ export default {
   debug: true,
   devtool: 'source-map', // more info:https://webpack.github.io/docs/build-performance.html#sourcemaps and https://webpack.github.io/docs/configuration.html#devtool
   noInfo: true, // set to false to see a list of every file being bundled.
-  entry: './src/index',
+  entry: path.resolve(__dirname, '/src/index'),
   target: 'web', // necessary per https://webpack.github.io/docs/testing.html#compile-and-test
   output: {
-    path: `${__dirname}/dist`,
+    path: path.resolve(__dirname, 'dist'),
     publicPath: '/',
     filename: '[name].[chunkhash].js'
   },