title: how do I get source map working for npm linked angular library
body: <p>I have created angular 7 library with <code>ng g library @my-org/some-lib</code> and use it in separate angular app by <code>npm link</code> to be able to develop both app and a library. </p>
  
  <p>Now I found that in dev tools I see the library as a separate <code>my-org-some-lib</code> bundled js file resolved from the <code>vendor.js.map</code> yet it is not resolving further to the <code>sourceMappingURL=my-org-some-lib.js.map</code> which exists in the <code>my-org-some-lib.js</code> and the map file is actually generated in a builded library.</p>