Demonstrate multiple transition retry rejected

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  previousTransition: null,
  
  retryErr: null,
  
  actions: {
  	retryPreviousTransition() {
    	const previousTransition = this.get('previousTransition');
      
      console.log('previousTransition');
      
      return previousTransition.retry().then(() => {
      	console.log('resolved');
      }).catch((err) => {
      	console.log('rejected', err);
        this.set('retryErr', err);
      })
    }
  }
});

router.js

import Ember from 'ember';
import config from './config/environment';

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

Router.map(function() {
  this.route('app-target-route');
  this.route('index-targeted-route');
});

export default Router;

routes.app-target-route.js

import Ember from 'ember';

export default Ember.Route.extend({
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  redirect(model, transition) {
  	const controller = this.controllerFor('application');
    controller.set('previousTransition', transition);
    
    console.log(transition);
    
    this.replaceWith('app-target-route');
  }
});

routes.index-targeted-route.js

import Ember from 'ember';

export default Ember.Route.extend({
});

routes.index.js

import Ember from 'ember';

export default Ember.Route.extend({
  beforeModel(transition) {
  	this.replaceWith('index-targeted-route');
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>

Retry Error: {{if retryErr retryErr "none"}}

<br>

<button type="button" {{action "retryPreviousTransition"}}>
	Retry Previous Transition
</button>

twiddle.json

{
  "version": "0.13.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.16.2",
    "ember-template-compiler": "2.16.2",
    "ember-testing": "2.16.2"
  },
  "addons": {
    "ember-data": "2.16.3"
  }
}