ES6 Interoperability Testing

application.controller.js

import Ember from 'ember';
import extendBabelClass from '../utils/extend-babel-class';

class MyController {  
  get appName() {
    return 'Ember Twiddle';
  }
  
  someCoolFunction() {
    return 'This is my cool function'; 
  }
}

export default Ember.Controller.extend(extendBabelClass(MyController), {
  init() {
    this._super(this, arguments);
  }
});

application.template.hbs

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

twiddle.json

{
  "version": "0.5.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.2.0/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember-template-compiler.js"
  }
}

utils.extend-babel-class.js

import Ember from 'ember';

export default function extendBabelClass(klass) {
  const mixin = Ember.Mixin.create();
  mixin.properties = mixin.properties || {};
  Object.getOwnPropertyNames(klass.prototype).forEach((prop) => {
    if (prop !== 'constructor') {
      mixin.properties[prop] = klass.prototype[prop];
    }
  });
  return mixin;
}