New Twiddle

components.memory-leak-child.js

import Ember from 'ember';

export default Ember.Component.extend({
 
  willDestroyElement(){
    this._super(...arguments);
		Ember.set(this,'model','');
    console.log('in child');
  }
});

components.memory-leak-parent.js

import Ember from 'ember';

export default Ember.Component.extend({
  
	didInsertElement(){

    this._super(...arguments);
    let model1 = Ember.A(),
    model = Object.create({
      'display_name':'Srinithi',
      'email_id':'[email protected]'
    });

	model1.pushObject(model);

	Ember.set(this,'model',model1);
	Ember.set(this,'showing',false);

	},

  actions:{
	
    show_hide(){
			this.toggleProperty('showing');

		}
    
	},
	willDestroyElement(){
    this._super(...arguments);
    Ember.set(this,'model','');
	}
  
});

controllers.application.js

import Ember from 'ember';

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

templates.application.hbs

<br>
<br>
{{memory-leak-parent}}
{{outlet}}
<br>
<br>

templates.components.memory-leak-child.hbs

<div class="content">
	<div class="ui">
    	<div class="top bottom margin4">
    		<a class="user">
          <span class="user-name">
            {{model.display_name}}
          </span>
				</a>
        <div class="meta-mail">
          <span class="email-id">{{model.email_id}}</span>
        </div>
			</div>
	</div>
</div>
    {{yield}}

templates.components.memory-leak-parent.hbs

	<div class="main container">
	<br><br><b>	This is the parent </b><br><br>
		<div class="memory-leak modern">
			<div class="leak-parent">
        <button {{action 'show_hide'}}>Show/Hide child</button>
        {{#if showing}}
				{{#each model as |user|}}
				{{memory-leak-child model=user}}
				{{/each}}
        {{/if}}
			</div>
		</div>
	
  </div>

{{yield}}

twiddle.json

{
  "version": "0.13.1",
  "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"
  }
}