component template inheritance

components.another-father-component.js

import Ember from 'ember';

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

components.another-son-component.js

import Ember from 'ember';

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

components.father-component.js

import Ember from 'ember';
import layout from 'twiddle/templates/components/father-component';

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

components.son-1-component.js

import Ember from 'ember';
import FatherComponent from 'twiddle/components/father-component';

export default FatherComponent.extend({
});

components.son-2-component.js

import Ember from 'ember';
import FatherComponent from 'twiddle/components/father-component';

export default FatherComponent.extend({
});

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}}

father-layout: {{father-component}}
son-1-layout: {{son-1-component}}
son-2-layout: {{son-2-component}}

another-son-layout: {{another-son-component}}
<br>
<br>

templates.components.another-son-component.hbs

<h1>another-son</h1>

templates.components.father-component.hbs

<h1>father</h1>

templates.components.son-1-component.hbs

<h1>son-1</h1>

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"
  }
}