vanillajs-deck/slides/165-classes-2.html

<title>Classes (2)</title>
<h1>Classes</h1>
<pre>
class square extends shape {
    constructor() {
        super(4);
    }
}

const sq = new square();
// square.sides = 4;

const hex = sq.makeShape(6);
// error: static method isn't inherited
</pre>