Now that we have Javascript modules, is all this trickery on top of a library like this one still needed?

This is how the Chart.js code begins:

    (function (global, factory) {
    typeof exports === 'object' && typeof module !== 
    'undefined' ? module.exports = factory() :
    typeof define === 'function' && define.amd ? 
    define(factory) :
    (global.Chart = factory());
    }(this, (function () { 'use strict';
    ... now comes all the code ...

I have no idea how to read this, what this means and how to invoke a construct like this.