title: Error: EMFILE: too many open files - React Native CLI
body: <p>I try to run a react-native-cli project using react-native start, and the metro bundler fails, saying the following:  </p>
  
  <pre><code>events.js 187
  throw er; //Unhandled 'error' event
  
  Error: EMFILE: too many open files, watch
  
  Emitted 'error' event on NodeWatcher isntance at:
       at NodeWatcher: checkedEmitError (.../react-native-project/node_modules/sane/src/node_watcher.js:143:12)
       at FSWatcher.emit (events.js:210:5)
       at FSEvent.FSWatcher:_handle onchange (internal/fs/watchers.js:129:12) {
     errno: -24,
     syscall: 'watch',
     code : 'EMFILE',
     filename: null
  )
  Process terminated. Press &lt;enter&gt; to close the window
  </code></pre>