New Twiddle

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  anInt: 10,
  didInsertElement() {
    this._super(...arguments);
    this.set('_cancel', Ember.run.later(this, 'updateObj', 1000));
  },
  willDestroyElement() {
    this._super(...arguments);
    Ember.run.cancel(this.get('_cancel'));
  },
  changingObj: Ember.computed(function() {
    return {id: 1}
  }),
  updateObj() {
   let id = this.get('changingObj.id') + 1;
   let obj = {id: id};
   this.set('changingObj', obj);
   this.set('_cancel', Ember.run.later(this, 'updateObj', 1000));
  }
});

controllers.application.js

import Ember from 'ember';

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

helpers.my-helper.js

import Ember from 'ember';
let called = 0;
export function myHelper([int]/*, hash*/) {
  called++;
  return `{{my-helper}} Called ${called} times with argument ${int}`;
}

export default Ember.Helper.helper(myHelper);

helpers.second-helper.js

import Ember from 'ember';
let called = 0;
export function myHelper([int]/*, hash*/) {
  called++;
  return `{{second-helper}} Called ${called} times with argument ${int}`;
}

export default Ember.Helper.helper(myHelper);

templates.application.hbs

{{#my-component as |props|}}
	Integer: {{props.anInt}}<br />
  Changing Object: {{props.changingObject.id}}<br /><br />
  {{my-helper props.anInt}} < br/>
  {{second-helper 5}}
	
  
{{/my-component}}

templates.components.my-component.hbs

<h3>My Component</h3>
{{yield (hash anInt=anInt changingObject=changingObj)}}

twiddle.json

{
  "version": "0.10.4",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.7.0",
    "ember-data": "2.7.0",
    "ember-template-compiler": "2.7.0"
  },
  "addons": {}
}