New Twiddle

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  init() {
    const message = 'Test message.';
    const options = { id: 'test', until: '3.0.0' };
    
    // passing function
  	Ember.deprecate(message, function() {
    	return true;
    }, options);
    
    const myConstructor = {}.constructor;
    
    // passing constructor (also a function)
    Ember.warn(message, myConstructor, options);
    
    // passing function with double arrow syntax
    Ember.assert(message, () => true, options);
    
    this._super();
  }
});

application.template.hbs

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

twiddle.json

{
  "version": "0.4.11",
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "http://builds.emberjs.com/tags/v2.2.0-beta.1/ember.debug.js",
    "ember-template-compiler": "http://builds.emberjs.com/beta/ember-template-compiler.js"
  }
}