New Twiddle

components.a-table.component.js

import Ember from 'ember';
import layout from './template';

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

components.a-table.template.hbs

<h2>Table</h2>
{{yield}}

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

templates.application.hbs

{{#a-table}}
	{{#a-row type="header"}}
  	{{#a-cell}}HI{{/a-cell}}
  {{/a-row}}
{{/a-table}}

twiddle.json

{
  "version": "0.15.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.2.2",
    "ember-template-compiler": "3.2.2",
    "ember-testing": "3.2.2"
  },
  "addons": {
    "ember-data": "3.2.0"
  }
}