New Twiddle

controllers.application.js

import Ember from 'ember';
import {inject as service} from '@ember/service';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  myService: service(),
  
  init(){
    this._super(...arguments);
    
    this.myService.run(() => console.log('hello world'), 1000);
  }
});

services.my-service.js

import Ember from 'ember';
import { task, timeout } from 'ember-concurrency';
import EmberObject from '@ember/object';

const InfiniRunner = EmberObject.extend({
  
  func: undefined,
  millis: 1000,
    
  runIt: task(function*() {
    yield timeout(this.millis);
    if (this.func){
      this.func();
    }
    this.runIt.perform();
  })
});


export default Ember.Service.extend({
  
    run(fun, millis) {
      InfiniRunner.create({
        millis:1000,
        func: fun
      }).get('runIt').perform();  
    }
});

templates.application.hbs

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

twiddle.json

{
  "version": "0.15.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.2.2",
    "ember-template-compiler": "3.2.2",
    "ember-testing": "3.2.2"
  },
  "addons": {
    "ember-data": "3.2.0",
    "ember-concurrency": "0.8.20"
  }
}