title: ES6 shorthand object key checking
body: <p>Curious to know if there's any part of ES6 that makes these kind of checks a little more concise:</p>
  
  <pre><code>componentWillReceiveProps(nextProps) {
      if(nextProps &amp;&amp; nextProps.filterObj &amp;&amp; nextProps.filterObj.area){
          // go ahead
      }
  }
  </code></pre>