import statement

controllers.application\.js

import Controller from '@ember/controller';
import userUtils from '../user/utils';

export default class ApplicationController extends Controller {
  get users() {
    return userUtils.sort(this.model) 
  }
}

routes.application\.js

import Route from '@ember/routing/route';

export default class ApplicationRoute extends Route {
  model() {
    return [{
      id: 1,
      name: 'Fred Smith',
    }, {
      id: 2,
      name: 'Joe bloggs'
    }]
  }
}

templates.application\.hbs

<ol>
  {{#each this.users as |user|}}
    <li>{{user.name}}</li>
  {{/each}}
</ol>

twiddle\.json

{
  "version": "0.17.1",
  "EmberENV": {
    "FEATURES": {},
    "_TEMPLATE_ONLY_GLIMMER_COMPONENTS": false,
    "_APPLICATION_TEMPLATE_WRAPPER": true,
    "_JQUERY_INTEGRATION": true
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.js",
    "ember": "3.18.1",
    "ember-template-compiler": "3.18.1",
    "ember-testing": "3.18.1"
  },
  "addons": {
    "@glimmer/component": "1.0.0"
  }
}

user.utils\.js

export function sort(users) {
  return users.slice().reverse(); 
}