resolveRegistration

application.controller.js

import Ember from 'ember';
const { Controller, getOwner } = Ember;

export default Controller.extend({
  appName: 'Ember Twiddle',
  
  go() {
    let owner = getOwner(this);
    let factory = owner.resolveRegistration('component:x-foo');
    alert(factory);
  }
});

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>
<button onclick={{action go}}>Go</button>

components.x-foo.component.js

import Ember from 'ember';

const { Component } = Ember;

export default Component.extend().reopenClass({
  toString() {
    return `x-foo factory`;
  }
});

twiddle.json

{
  "version": "0.6.0",
  "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/2.3.1/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.3.3/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember-template-compiler.js"
  }
}