title: Jest fails with error: Cannot find module 'react/lib/ReactComponentTreeHook'
body: <p>I have installed Jest v17.0.3 in my react project.</p>
  
  <p>When I run jest locally it works fine, but on the build server it fails with:</p>
  
  <blockquote>
    <p>Error: Cannot find module 'react/lib/ReactComponentTreeHook' from 'ReactDebugTool.js'</p>
  </blockquote>
  
  <p>Both machines are running node version 6.9.1 and npm version 4.0.2.</p>