title: Include es6 class from external file in Node.js
body: <p>Say I have a file <code>class.js</code>:</p>
  
  <pre><code>class myClass {
     constructor(arg){
        console.log(arg);
     }
  }
  </code></pre>
  
  <p>And I wanted to use the <code>myClass</code> class in another file. How would I go about this?<br>
  I've tried:<br>
  <code>var myClass = require('./class.js');</code><br>
  But it didn't work.<br>
  I've looked at <code>module.exports</code> but haven't found an example that works for es6 classes.</p>