title: Compress static javascript files in React App
body: <p>In my app I use from facebookincubator <code>create-react-app</code> repositorium. After some works I deploy my app on server and testing by PageSpeed Insights from Google.</p>
  
  <p>My feedback from test is that I don't have compressed statc javascript file, which weight could be reduced from 1MB to 150kB. Is possible to uglify javascript file?
  In this repositorium I can't find webpack config, could you tell me when I switch compressing ?</p>