title: Import js from a typescript dependency in create-react-app?
body: <p>In <a href="https://github.com/DavidSouther/monots" rel="nofollow noreferrer">https://github.com/DavidSouther/monots</a> I have a straightforward multi-project Typescript configuration.</p>
  <p>common/ has library utilities, and gets compiled from src/ to lib/. The package.json is (I believe) set up to expose the .js and .d.ts files from lib/ to consumers, and the .js is in commonjs.</p>
  <p>app/ has a create-react-app project, which imports from <code>common/</code>. When starting, it fails to build with</p>
  <pre><code>Failed to compile.
  
  ./src/index.tsx
  Module not found: Can't resolve 'common' in '/Users/dsouther/devel/monots/app/src'
  </code></pre>
  <p>What configuration do I need in <code>common/</code> for create-react-app to be able to pack these files correctly?</p>