SO-54749173

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
	cp1: 0,
  promiseValue: null,
	cpPromise: Ember.computed('cp1', function(){
    return new Ember.RSVP.Promise((resolve, reject) => {
      resolve(Math.floor(Math.random() * 1000))
    })
  }),
  init(){
    this._super()
    setInterval(Ember.run.bind(this, function() {
      this.incrementProperty('cp1')
      	Ember.run.later(this, function() {
          this.get('cpPromise').then(Ember.run.bind(this, function(value){
          	this.set('promiseValue', value)
          }))
     		})
    }), 1000)
  }
});

templates.application.hbs

<h1>Promise Value:</h1>
<h3>{{promiseValue}}</h3>

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": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "3.4.2"
  }
}