Testing-Redirect-Duration-Blank-Ember

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  redirectDuration: Ember.computed("redirectBefore", "transitionStart", {
    get() { 
      return this.get('transitionStart') - this.get('redirectBefore')
    }
  })
  
});

did-load.component.js

import Ember from 'ember';

export default Ember.Component.extend({
  tagName: "",
  didInsertElement() { 
    this.get('action')()
  }
}).reopenClass({
  positionalParams: ['action']
});

did-load.template.hbs

{{yield}}

game-redirect.route.js

import Ember from 'ember';

export default Ember.Route.extend({
  beforeModel() { 
    const controller = this.controllerFor("application")
    controller.set("redirectBefore", window.performance.now())
  },
  
  model() {
    const controller = this.controllerFor("application")

    return {
      goToPDP: () => { 
        controller.set("transitionStart", window.performance.now())
        this.transitionTo('game.pdp.index') 
      }
    }
  }
});

game-redirect.template.hbs

{{did-load this.model.goToPDP}}

game.pdp.index.template.hbs

{{outlet}}

{{#link-to "index"}}
  Back
{{/link-to}}

<h4>Index</h4>

game.pdp.template.hbs

{{outlet}}
<h3>PDP</h3>

game.template.hbs

{{outlet}}
<h2>Game</h2>

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('game-redirect')
  
  this.route('game', function() { 
  	this.route('pdp', function() {
    })
  })
});

export default Router;

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<h2>Redirect Duration: {{this.redirectDuration}}</h2>
{{#link-to "game-redirect"}}
  Begin Transition Duration Test
{{/link-to}}
<br>
<br>

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": true,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "3.4.2"
  }
}