Unique, strong (rfc4122), friendly, short UUIDs

Synopsis

Uses the uuid module to produce an rfc4122 v4 compliant uuid and then encodes it using a 64-char alphabet (by default includes upper, lower letters, numbers, -, _) to encode the uuid in a shortened (22 characters - instead of 32 hex) but still url friendly string.

The module is just a few lines of code

var CHARS = '.PYFGCRLAOEUIDHTNSQJKXBMWVZ_pyfgcrlaoeuidhtnsqjkxbmwvz1234567890';
module.exports = function (chars) {
    var uuid = require('uuid');
    var d64 = require('d64')(chars||CHARS);
    return d64.encode(uuid.v4(null,new Array(16),0))
}

Description

Using this module:

> var uuid = require('uuid-encoded');
> console.log(uuid());
'xkfA7KJ1NEY7oFH21vEi7-'
> console.log(uuid());
'qOloinw5JJRBf-OPJIqrgx'
> console.log(uuid());
'wVeh8at4SB5UFnMQ69awQ-'
> // use an alphabet that uses . instead of -
> uuid('.PYFGCRLAOEUIDHTNSQJKXBMWVZ_pyfgcrlaoeuidhtnsqjkxbmwvz1234567890')
'D7a1L0.PSvQo_DIjccTKuc'

Installation

Installing the module

npm install uuid-enccoded