New Twiddle

controllers.application.js

import Ember from 'ember';
import { defer } from 'rsvp';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  init() {
  	this._super(...arguments);
    
    this.myAsyncFun();
  },
  
  myAsyncFun: async function() {
    console.log('called myAsyncFun');
    const deferred = defer();
    const myprom = deferred.promise;
    const model = await myprom;
  
    console.log('will call deferred.resolve');
  
  	deferred.resolve(['test']);
    await deferred.promise;
	}
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>

twiddle.json

{
  "version": "0.14.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "2.18.2",
    "ember-template-compiler": "2.18.2",
    "ember-testing": "2.18.2"
  },
  "addons": {
    "ember-data": "2.18.2"
  }
}