async-stuff-to-do

components.my-component\.hbs

<p>{{this.counter}}</p>
<button {{on "click" this.doStuff}}>click me</button>

components.my-component\.js

import Component from '@glimmer/component';
import { action } from '@ember/object';
import { tracked } from '@glimmer/tracking';
import { task } from 'ember-concurrency';

export default class extends Component {
  @tracked counter = 0;

  @action doStuff() {
    setInterval(() => {
      this.counter = this.counter + 1;
      console.log(this.counter);
    }, 1000);
  }
}

controllers.application\.js

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

export default class ApplicationController extends Controller {
  appName = 'Ember Twiddle';
	@tracked showComponent = true;
	@action toggleStuff() {
    this.showComponent = !this.showComponent;
  }
}

templates.application\.hbs

{{#if this.showComponent }}
<div>
  <MyComponent />
</div>
{{/if}}
<button {{on "click" this.toggleStuff}}>
  {{if this.showComponent "I don't need this component anymore" "wtf put it back"}}
</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",
    "ember-concurrency": "2.2.1"
  },
  "addons": {
    "@glimmer/component": "1.0.0"
  }
}