ember-check-error

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  selectedProduct: [],
  selectedRecrodsObserver: Ember.observer('selectedProduct', function () {
    alert(1);
  })
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  setupController(controller, model) {
    this._super(controller, model);
    this.controller.setProperties({
      selectedProduct: null,
      appName: 'Ember Twiddlesss',
      isProductSelected: Ember.computed.gt('selectedProduct', 1)
    });
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{#if isProductSelected}}
	Product selected
{{else}}
	Product not selected
{{/if}}

{{my-component selectedProduct=selectedProduct}}
{{outlet}}
<br>
<br>

templates.components.my-component.hbs

{{yield}}

twiddle.json

{
  "version": "0.13.0",
  "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"
  }
}