title: Errors in IE 11 after `Ember new`, app does not serve (Ember 3.1.2)
body: <p>After creating a fresh application using <code>ember new ietest --no-welcome</code> and executing <code>ember serve</code> without modifying any code, the Ember app loads fine in Chrome and IE Edge but doesn't load in IE 11 and yields two errors: </p>
  
  <ul>
  <li><code>Syntax Error at vendor.js (64292,18)</code></li>
  <li><code>Expected Identifier at ietest.js (32,9)</code></li>
  </ul>
  
  <p><a href="https://i.stack.imgur.com/CGj38.png" rel="nofollow noreferrer">error console shortlog</a></p>
  
  <p><a href="https://i.stack.imgur.com/bexUb.png" rel="nofollow noreferrer">error console details</a></p>
  
  <p>The page is blank, it doesn't even display "Welcome to Ember". The errors also occur if I leave off <code>--no-welcome</code>. In that case, the hamster page doesn't appear.</p>
  
  <p>ember-cli version: 3.1.2</p>
  
  <p>OS: Windows 10</p>
  
  <p>Any way to fix this? Perhaps a setting in IE11 that I can toggle? </p>