loading substate and transition.abort()

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('route-with-loading-state');
  this.route('route-aborting-transition');
  this.route('route-aborting-transition-with-loading-state');
});

export default Router;

routes.route-aborting-transition-with-loading-state.js

import Ember from 'ember';
import { later } from '@ember/runloop';
import { Promise } from 'rsvp';

export default Ember.Route.extend({
		async afterModel(model, transition) {
    await new Promise((resolve) => {
      later(resolve, 1000);
    });
		console.log(transition.state)
		transition.abort();
  }
});

routes.route-aborting-transition.js

import Ember from 'ember';

export default Ember.Route.extend({
  beforeModel(transition) {
    transition.abort();
  }
});

routes.route-with-loading-state.js

import Ember from 'ember';
import { later } from '@ember/runloop';
import { Promise } from 'rsvp';

export default Ember.Route.extend({
  async beforeModel() {
    return await new Promise((resolve) => {
      later(resolve, 400);
    });
  },
  afterModel() {
    this.transitionTo('index');
  }
});

templates.application-loading.hbs

LOADING...

templates.application.hbs

<h1>loading substate and transition.abort()</h1>

{{#link-to "route-with-loading-state"}}route to verify loading state is working{{/link-to}}<br>
{{#link-to "route-aborting-transition"}}route aborting transition{{/link-to}}<br>
{{#link-to "route-aborting-transition-with-loading-state"}}route aborting transition after waiting a little bit{{/link-to}}<br>
{{outlet}}

templates.route-aborting-transition-with-loading-state.hbs

route-aborting-transition-with-loading-state

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "2.18.2",
    "ember-template-compiler": "2.18.2",
    "ember-testing": "2.18.2"
  },
  "addons": {
    "ember-data": "3.4.2"
  }
}