New Twiddle

components.classic-component\.js

import Component from '@ember/component';

export default Component.extend({
	actions: {
  	handleClick() {
    	this.hi();
    }
  }
})

components.glimmer-component\.js

import Component from '@glimmer/component';
import { action } from '@ember/object';

export default class extends Component {
  @action
  handleClick() {
  	this.args.hi();
  }
}

controllers.application\.js

import Controller from '@ember/controller';

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

	hi() {
  	console.log(this.appName);
  }
}

templates.application\.hbs

<h1>Welcome to {{this.appName}}</h1>

<ClassicComponent @hi={{this.hi}} />

<GlimmerComponent @hi={{this.hi}} />

templates.components.classic-component\.hbs

<button onclick={{action "handleClick"}}>
	Classic Component Button
</button>

templates.components.glimmer-component\.hbs

<button {{on "click" this.handleClick}}>
	Glimmer Component Button
</button>

twiddle\.json

{
  "version": "0.17.1",
  "EmberENV": {
    "FEATURES": {},
    "_TEMPLATE_ONLY_GLIMMER_COMPONENTS": false,
    "_APPLICATION_TEMPLATE_WRAPPER": true,
    "_JQUERY_INTEGRATION": true
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.js",
    "ember": "3.18.1",
    "ember-template-compiler": "3.18.1",
    "ember-testing": "3.18.1"
  },
  "addons": {
    "@glimmer/component": "1.0.0"
  }
}