Compile <pre>

controllers.application.js

import Ember from 'ember';

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

templates.application.hbs

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

<h1 id="aside">Aside</h1>
<div class="self-executing-code-block">
  <div class="example">
    {{es-aside}}
  </div>
  <pre class="language-handlebars"><code class="handlebars language-handlebars"><span class="token handlebars language-handlebars"><span class="token delimiter punctuation">{{</span><span class="token variable">es-aside</span><span class="token delimiter punctuation">}}</span></span></code></pre>
</div>

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"
  }
}