antd-theme-generator/node_modules/uuid/lib/rng.js

This a script to generate color specific styles less file and which you can use to change theme dynamically in browser

// Unique ID creation requires a high quality random # generator.  In node.js
// this is pretty straight-forward - we use the crypto API.

var crypto = require('crypto');

module.exports = function nodeRNG() {
  return crypto.randomBytes(16);
};