New Twiddle

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle'
});

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{my-component}}

<br>
<br>

my-component.component.js

import Ember from 'ember';

export default Ember.Component.extend({
  
  init() {
    this._super(...arguments);
    
		Ember.Object.reopen({
			propertyDidChange(keyName) {
  			console.debug('setting isDirty');
        this.set('isDirty', true);
        
        return this._super(keyName);
      },
      setFoo(fooVal) {
        this.set('foo', fooVal);
        console.debug('set foo');
      }
		});

		var model = Ember.Object.create({foo: 'foo'})

		this.set('model', model);
    
    Ember.run.later(this, function () {
    	this.get('model').setFoo('FOO!');
      console.debug('set foo');
    }, 3000);

	}
  
});

my-component.template.hbs

<div>
Foo: {{model.foo}}
</div>
<div>
isDirty: {{model.isDirty}}
</div>

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"
  }
}