New Twiddle

controllers.application\.js

import Controller from '@ember/controller';

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

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('my-route'); // No I18N
  this.route('sma'); // No I18N
});

export default Router;

routes.my-route\.js

import Route from '@ember/routing/route';

export default Route.extend({

  init() {
    this._super(...arguments);
    
    this.on('routeWillChange', transition => {
      alert('routeWillChange >>>>.  My route');
    });

    this.on('routeDidChange', transition => {
     alert('routeDidChange >>>>.  My route');
    });
  }
});

routes.sma\.js

import Route from '@ember/routing/route';

export default Route.extend({

  init() {
    this._super(...arguments);
    
    this.on('routeWillChange', transition => {
      alert('routeWillChange >>>>.  SMA');
    });

    this.on('routeDidChange', transition => {
     alert('routeWillChange >>>>.  SMA');
    });
  }
});

templates.application\.hbs

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

{{#link-to 'my-route'}} Home {{/link-to}}
<br>
<br>
{{#link-to 'sma'}} SMA 1 {{/link-to}}

{{outlet}}
<br>
<br>

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": "3.11.1",
    "ember-template-compiler": "3.11.1",
    "ember-testing": "3.11.1"
  },
  "addons": {
    "@glimmer/component": "1.0.0",
    "ember-data": "3.11.5"
  }
}