JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/trianglify/0.2.1/trianglify.min.js"></script>
<div id="something"></div>

CSS

#something {
    height: 200px;
    width: 300px;
    position: absolute;
    left: 30px;
    top: 30px;
}

JavaScript

var something = document.getElementById('something');
var dimensions = something.getClientRects()[0];
var pattern = Trianglify({
    width: dimensions.width, 
    height: dimensions.height
});
something.appendChild(pattern.canvas());