json.parse ember array

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle', 
  
  arraySet: Ember.A([
    {
      name: 'foo',
      childArray: Ember.A([
        { name: 'bar' },
        { name: 'baz' }
      ])
    }
  ]),
  
  arraySetParsed: Ember.computed('array', function() {
    var a = JSON.parse(JSON.stringify(Ember.get(this, 'arraySet')));
    
    console.log(a.findBy('name', 'foo'));

    console.log(a);
  })
});

templates.application.hbs

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

{{arraySetParsed}}

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"
  }
}