title: How to generate sourcemaps in create react app?
body: <p>I'm wondering how to generate source maps in create-react-app? are they done implicitly? and do they live in the build folder</p>
  
  <p>I've read quite a lot about them being generated with webpack but my app is not using it, so I was wondering how I do this without webpack?</p>
  
  <p>I also don't want to eject </p>