New Twiddle

components.component-inner.js

import Ember from 'ember';

export default Ember.Component.extend({
});

components.component-outer.js

import Ember from 'ember';

export default Ember.Component.extend({
  testProperty: 'oryginal',
  testObject: {
    test: 1,
    test2: 2,
    test: 3
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  testProp: 'testProp',
  testObject: {
  	test: 1,
    test2: 2
  }
});

templates.application.hbs

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

{{#component-inner testObject=testObject testProp=testProp }}
	test text
{{/component-inner}}

<br>
<br>

templates.components.component-inner.hbs

{{#component-outer testObject=testObject}}
{{yield}}
{{/component-outer}}

templates.components.component-outer.hbs

{{yield}} - {{testObject}} - {{testProp}}

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}