title: how to turn off differential loading in Angular v8?
body: <p>Angular-CLI v8 implemented differential loading.
  But I don't need files built by es5.
  I want to decrease deploy quantity.</p>
  
  <p>I tried below. But CLI has generated es5 files.</p>
  
  <ul>
  <li>set <code>es5browsersupport: false</code> in angular.json, and got error.</li>
  <li>exclude Chrome 41, IE 9-11 and ie_mob 11 from browserList.</li>
  </ul>