Both jquery and three.js are loaded from a cdn via a script tag inside the head
However they are required as usual inside our modules, i.e.
exposify makes the adjustements to make this all work
var $ = require('jquery')
Please open the dev console to see logged versions of both libraries and investigate the
main.jsin the sources tab in order to find out how it works (all jquery and three require calls were replaced with assignments from the window).