update-items

components.lists-provider.js

import Ember from 'ember';

export default Ember.Component.extend({
  init() {
    this._super(...arguments);
    this.set('list1', [{id: 'a'}, {id: 'b'}, {id: 'c'}]);
    this.set('list2', [{id: 'a'}, {id: 'b'}, {id: 'c'}]);
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

templates.application.hbs

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

{{#lists-provider a b}}
	<ul>
	{{#each a as |aitem|}}
  	<li>{{aitem.id}}</li>
  {{/each}}
  </ul>
{{/lists-provider}}

<br>
<br>

templates.components.lists-provider.hbs

{{yield list1 list2}}

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"
  }
}