title: React crashes when trying to import from symlink
body: <p>I am using react build and trying to import some files from a folder outside of the create-react-app directory. It doesn't allow me to do that so I try to make a symlink of the folder inside of the directory. Then I got errors from react-dev-utils/ModuleScopePlugin.js, it seems that react is not very happy about symlinks? Everything works fine when I replace the symlink folder with the actual folder.</p>
  <pre><code>Creating an optimized production build...
  ..../src/frontend/project-editor/node_modules/react-dev-utils/ModuleScopePlugin.js:31
            request.descriptionFileRoot.indexOf('/node_modules/') !== -1 ||
                                        ^
  
  TypeError: Cannot read property 'indexOf' of undefined
  </code></pre>