New Twiddle

controllers.application.js

import Ember from 'ember';

const data = [{
    fruit: 'apples',
    price: 5
  }, {
    fruit: 'bananas',
    price: 2
  }, {
    fruit: 'pears',
    price: 3
  }];

const columns = [{
    title: 'Fruit',
    propertyName: 'fruit'
  }, {
    title: 'Price',
    propertyName: 'price'
  }];

export default Ember.Controller.extend({
  data: data,
  columns: columns
});

templates.application.hbs

<ModelsTable
  @data={{data}}
  @columns={{columns}}
/>

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "3.4.2",
    "ember-decorators": "6.1.0",
    "ember-models-table": "2.10.0"
  }
}