title: Es6.promise.js file: Unable to get property raise of undefined or null reference
body: <p>I have a react app that triggers this exception right when I attempt to <code>setState</code>. I find the exception in a file called <code>es6.promise.js</code>. Does anyone know what package this file is from and what this error is about?</p>
  
  <p>I don't know if this has anything to do with it but I'm using <code>wijmo's collectionView</code> to set my state to it.</p>
  
  <pre><code>this.setState({rowData: collectionView});
  </code></pre>