shortid/lib/random/random-byte-browser.js

Amazingly short non-sequential url-friendly unique id generator.

'use strict';

var crypto = typeof window === 'object' && (window.crypto || window.msCrypto); // IE 11 uses window.msCrypto

var randomByte;

if (!crypto || !crypto.getRandomValues) {
    randomByte = function(size) {
        var bytes = [];
        for (var i = 0; i < size; i++) {
            bytes.push(Math.floor(Math.random() * 256));
        }
        return bytes;
    };
} else {
    randomByte = function(size) {
        return crypto.getRandomValues(new Uint8Array(size));
    };
}

module.exports = randomByte;