New Twiddle

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
    
    data: [
        'Simple root node',
        {
            'text': 'Single child node (has tooltip)',
            'type': 'single-child',
            'children': [
                'one child'
            ],
            'a_attr': {'class': 'hint--top', 'data-hint': 'Use a_attr to add tooltips'}
        },
        {
            'id': 'rn2',
            'text' : 'Opened node (has tooltip)',
            'state' : {
                'opened' : true,
                'selected' : true
            },
            'a_attr': {'class': 'hint--bottom', 'data-hint': 'This is a bottom mounted node tooltip'},
            'children' : [
                {
                  'text' : 'Child 1'
                },
                'Child 2'
            ]
        }
    ]
});

templates.application.hbs

<div class="sample-tree">
    {{ember-jstree
        data=data
    }}
</div>

twiddle.json

{
  "version": "0.10.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.6.0",
    "ember-data": "2.6.1",
    "ember-template-compiler": "2.6.0"    
  },
  "addons": {
    "ember-cli-jstree": "1.0.3"
  }
}