New Twiddle

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle',
  afterInit: Ember.on('init', function() {
  	Ember.run.next(() => {
    	console.log('Send action.');
      this.send('exampleAction');
    });
  }),
  actions: {
  	exampleAction() {
    	console.log('exampleAction handled');
    }
  }
});

application.template.hbs

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

initializers.action-hook.js

import Ember from 'ember';

export function initialize() {
  Ember.ActionHandler.reopen({
  	send() {
      console.log("hooked");
      this._super(...arguments);
    }
	});
}

export default {
  name: 'action-hook',
  initialize: initialize
};

twiddle.json

{
  "version": "0.4.16",
  "EmberENV": {
    "FEATURES": {}
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.1.0/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.1.0/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.1.0/ember-template-compiler.js"
  }
}