Closure actions passed through components

components.level-one.js

import Ember from 'ember';

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

components.level-two.js

import Ember from 'ember';

export default Ember.Component.extend({

});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  actions: {
    foo(bar) {
      alert(bar);
    }
  }
});

templates.application.hbs

{{level-one foo=(action 'foo')}}

templates.components.level-one.hbs

Level one:
{{level-two foo=foo}}

templates.components.level-two.hbs

Level two:
<span {{action foo 'hello world'}}>Click me</span>

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": {}
}