New Twiddle

components.x-button.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
    buttonPressed() {
      const onButtonPress = this.get('onbuttonpress');
      
      if (onButtonPress) {
        onButtonPress(this.get('name'));
      }
    }
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  actions: {
    sayName(name) {
      alert(`Hello ${name}!`);
    }
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
{{x-button onbuttonpress=(action 'sayName') name=appName}}
<br>
<br>

templates.components.x-button.hbs

<button {{action 'buttonPressed'}}>Click me!</button>

twiddle.json

{
  "version": "0.10.6",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.9.0",
    "ember-data": "2.9.0",
    "ember-template-compiler": "2.9.0",
    "ember-testing": "2.9.0"
  },
  "addons": {}
}