New Twiddle

components.my-component\.hbs

<div {{did-update this.reRender this.counter}}>hi</div>

components.my-component\.js

import Component from '@glimmer/component';
import { inject as service } from '@ember/service';
import { tracked } from '@glimmer/tracking';

export default class MyComponent extends Component {
  @service router;
  
  @tracked counter = 0;
  
  constructor() {
    super(...arguments);
    
    this.router.on('routeDidChange', () => {
      this.counter++;
    })
  }

	reRender() {
    alert('re-rendering!');
  }
}

router\.js

import EmberRouter from '@ember/routing/router';
import config from './config/environment';

const Router = EmberRouter.extend({
  location: 'none',
  rootURL: config.rootURL
});

Router.map(function() {
  this.route('foo');
  this.route('bar');
});

export default Router;

templates.application\.hbs

<LinkTo @route="index">Foo</LinkTo>
<LinkTo @route="foo">Foo</LinkTo>
<LinkTo @route="bar">Bar</LinkTo>
<hr />
<MyComponent />

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",
    "@ember/render-modifiers": "1.0.2"
  }
}