New Twiddle

components.fb-table-header-cell.js

import Ember from 'ember';

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

components.fb-table-header.js

import Ember from 'ember';

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

components.fb-table.js

import Ember from 'ember';

export default Ember.Component.extend({
  headers: ['id', 'name', 'type'],
  data: [{
    'id': 1,
    'name': 'john',
    'type': 'admin'
  },{
    'id': 2,
    'name': 'jane',
    'type': 'user'
  }],
});

controllers.application.js

import Ember from 'ember';

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

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
{{#fb-table as |table|}}
{{table.header}}
{{/fb-table}}
<br>
<br>

templates.components.fb-table-header-cell.hbs

{{header}}

templates.components.fb-table-header.hbs

{{#if (has-block)}}
  {{yield}}
{{else}}
    {{#each headers as |header|}}
      {{fb-table-header-cell header=header}}
    {{/each}}
{{/if}}

templates.components.fb-table.hbs

{{yield
        (hash
          header=(component
            'fb-table-header'
            headers=headers
          )
        )
 }}

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "3.4.2"
  }
}