ES Class Demo

components.my-component.js

import Ember from 'ember';

let FooComponent = Ember.Component.extend({
  baz: Ember.computed('foo', function() {
    return this.get('foo');
  }),
  
  fooObserver: Ember.observer('foo', function() {
    this.set('qux', 'quux');
  }),
  
  actions: {
    updateFoo() {
      this.set('foo', 'bazzz');
    }
  }
});


export default class MyComponent extends FooComponent {
  constructor() {
    super();
    
    this.foo = 'bar';
  }
}

controllers.application.js

import Ember from 'ember';

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

templates.application.hbs

{{my-component}}

templates.components.my-component.hbs

<div>
	foo: {{foo}}
</div>
<div>
  baz: {{baz}}
</div>
<div {{action 'updateFoo'}}>
  qux: {{qux}}
</div>

twiddle.json

{
  "version": "0.13.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.16.2",
    "ember-template-compiler": "2.16.2",
    "ember-testing": "2.16.2"
  },
  "addons": {
    "ember-data": "2.16.3"
  }
}