recursive-component-usage

components.my-component.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',
  
  items:[{name:'First Level-1', items:[{name:'Second Level-1-1'}, {name:'Second Level-1-2'}]},
        {name:'First Level-2', items:[{name:'Second Level-2-1', items:[{name:'Third Level-2-1-1'},{name:'Third Level-2-1-2'},{name:'Third Level-2-1-3', items:[{name:'Forth Level-2-1-3-1'}]}]}, {name:'Second Level-2-2'}]},
        {name:'First Level-3'}]
});

templates.application.hbs

{{my-component items=items}}

templates.components.my-component.hbs

{{#each items as |item|}}
	<li>{{item.name}}
      {{#if item.items}}
         <ul>
           {{my-component items=item.items}}
         </ul>
      {{/if}}
	</li>
{{/each}}

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": {}
}