Octane Features

components.my-component\.js

import Component from '@glimmer/component';

export default class MyComponent extends Component {
};

controllers.application\.js

import Controller from '@ember/controller';
import { tracked } from '@glimmer/tracking';
import { action } from '@ember/object';

export default class ApplicationController extends Controller {
  @tracked
  appName = 'Ember Twiddle';

  @action
  appNameChanged(event) {
    this.appName = event.target.value;
  }
}

templates.application\.hbs

<h1>Welcome to {{this.appName}}</h1>
<MyComponent @appName={{this.appName}} @appNameChanged={{this.appNameChanged}} />

templates.components.my-component\.hbs

<br>
<br>
<input value={{@appName}} {{on "input" @appNameChanged}} />

twiddle\.json

{
  "version": "0.17.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.14.3",
    "ember-template-compiler": "3.14.3",
    "ember-testing": "3.14.3"
  },
  "addons": {
    "@glimmer/component": "1.0.0"
  }
}