title: Appcelerator Studio not detecting ES6 syntax
body: <p>As of v6.1.0, Titanium supported ECMAScript 6: <a href="https://docs.appcelerator.com/platform/latest/?mobile=/guide/ES6_in_Titanium_SDK_6.1.0" rel="nofollow noreferrer">https://docs.appcelerator.com/platform/latest/?mobile=/guide/ES6_in_Titanium_SDK_6.1.0</a></p>
  
  <p>I am currently using the official Accelerator Studio (based on Eclipse).</p>
  
  <p>Unfortunately, it seems that the studio puts a red squiggly line underneath some ES6 code such as:</p>
  
  <pre><code>books.map( () =&gt; 1 );
  let x = 5;
  </code></pre>
  
  <p>despite these being ES6 valid code.</p>
  
  <p>This indicates to me that the IDE for some reason, JS still does not recognise ES6 syntax.</p>
  
  <p>How can I update the studio so it detects ES6 syntax?</p>