title: React Native: Cannot read property 'RNFSFileTypeRegular' of undefined
body: <p>I'm using <a href="https://github.com/itinance/react-native-fs" rel="noreferrer">https://github.com/itinance/react-native-fs</a> in my app. But on running I'm getting the following error message. </p>
  
  <p><code>Cannot read property 'RNFSFileTypeRegular' of undefined</code>. </p>
  
  <p>But the same repo cloned and ran in another laptop works fine. </p>
  
  <p>Using Mac OS Sierra.</p>
  
  <p>I suspect this has something to do with `node_modules'. </p>
  
  <p>Tried uninstalling node and npm, still the same error. What am I doing wrong here ?</p>