Component Lifecycle Order

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  msgArray: null,
  
  testProp1: Ember.computed({
    set(key, value) {
      const msgArray = this.get('msgArray');
      if (msgArray != null) {
        msgArray.pushObject(
          'Setting testProp1'
        );
      }
      return value;
    }
  }),
  
  testProp2: Ember.computed({
    set(key, value) {
      const msgArray = this.get('msgArray');
      if (msgArray != null) {
        msgArray.pushObject(
          'Setting testProp2'
        );
      }
      return value;
    }
  }),
  
  didReceiveAttrs() {
    this._super(...arguments);
    
    this.get('msgArray').pushObject(
      'Running didReceiveAttrs'
    );
  },
  
  init() {
    console.log('Running init first');
    this.set('msgArray', []);
    this._super(...arguments);
  }
});

controllers.application.js

import Ember from 'ember';

let counter = 0;
export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  val1: 'Initial Value 1',
  val2: 'Initial Value 2',
  
  actions: {
    updateValues() {
      counter++;
      
      this.set('val1', 'Updated Value 1. Try number ' + counter);
      this.set('val2', 'Updated Value 2. Try number ' + counter);
    }
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
{{my-component testProp1=val1 testProp2=val2}}
<br>
<button {{action 'updateValues'}}>
	Click me to test component lifecycle method order
</button>
{{outlet}}
<br>
<br>

templates.components.my-component.hbs

{{#each msgArray as |msg|}}
	<div>{{msg}}</div>
{{/each}}

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"
  }
}