Range Component on 3.12

components.usage-date-range-selector\.js

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

export default class extends Component {
  @tracked
  startDate
  
  @tracked
  endDate
  
  constructor(owner, {startDate, endDate}) {
    super(...arguments)
    
    this.startDate = startDate;
    this.endDate = endDate;
  }
  
  @action
  go() {
		const startAsNumber = parseInt(this.startDate);
    const endAsNumber = parseInt(this.endDate);
    
    if (startAsNumber >= endAsNumber) return;
    
    this.args.onRangeChanged({
      startDate: this.startDate,
      endDate: this.endDate
    });
  }
}

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
	rangeMessage

  @action
	refreshData({ startDate, endDate }) {
    this.rangeMessage = `Showing data for ${startDate} thru ${endDate}`;
  }
}

templates.application\.hbs

<h1>{{this.rangeMessage}}</h1>
<br>
<br>
<UsageDateRangeSelector @startDate="1" @endDate="3" @onRangeChanged={{action "refreshData"}} />
<br>
<br>

templates.components.usage-date-range-selector\.hbs

For <Input @value={{this.startDate}} /> to  <Input @value={{this.endDate}} />

<button {{on "click" go}}>Update</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": "3.12.4",
    "ember-template-compiler": "3.12.4",
    "ember-testing": "3.12.4"
  },
  "addons": {
    "@glimmer/component": "1.0.0"
  }
}