Test example

components.my-component\.js

import Component from '@glimmer/component';

export default class extends Component {
}

components.my-ember-component\.js

import Component from '@ember/component';

export default class extends Component {
}

components.my-ember-using-glimmer\.js

import Component from '@ember/component';

export default class extends Component {
}

components.my-glimmer-using-ember\.js

import Component from '@glimmer/component';

export default class extends Component {
}

controllers.application\.js

import Controller from '@ember/controller';

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

templates.application\.hbs

<h1>Welcome to {{this.appName}}</h1>
<br>
<br>
{{outlet}}
<h2>Glimmer</h2>
<MyComponent foo='bar' @foo='ban' class='blue'/>
{{my-component foo='bar' class='blue'}}

<h2>Ember</h2>
<MyEmberComponent foo='bar' @foo='ban' class='blue'/>
{{my-ember-component foo='bar' class='blue'}}

<h2>Glimmer using Ember</h2>

{{my-glimmer-using-ember foo='bar' class='blue'}}
<MyGlimmerUsingEmber foo='bar' @foo='ban' class='blue'/>


<h2>Ember using glimmer</h2>
{{my-ember-using-glimmer foo='bar' class='blue'}}
<MyEmberUsingGlimmer foo='bar' @foo='ban' class='blue'/>
<br>
<br>

templates.components.my-component\.hbs

<div ...attributes>{{@foo}}</div>

templates.components.my-ember-component\.hbs

<div>{{foo}}</div>

templates.components.my-ember-using-glimmer\.hbs

<MyComponent foo='bar' @foo='ban' class='blue'/>
{{my-component foo='bar' class='blue'}}

templates.components.my-glimmer-using-ember\.hbs

<MyEmberComponent foo='bar' @foo={{@foo}} class='blue'/>
{{my-ember-component foo=@foo class='blue'}}

twiddle\.json

{
  "version": "0.17.0",
  "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/3.3.1/jquery.js",
    "ember": "3.17.0",
    "ember-template-compiler": "3.17.0",
    "ember-testing": "3.17.0"
  },
  "addons": {
    "@glimmer/component": "1.0.0"
  }
}