Example of sharing code between model and web packages

The userName function is exported from model and imported into web in main.ts

Some things to make sure:

• moduleResolution in tsconfig.json of web is "bundler"
• The tsconfig.json of the model package has settings that work in node and browser environments
• The exports field is set in the model package
• I couldn't get this to work with an npm install, yarn, pnpm or bun should work