https://github.com/spazmodius/fastGuid

Blazingly fast UUIDs in Node.js
https://github.com/spazmodius/fastGuid

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Blazingly fast UUIDs in Node.js

• Host: GitHub
• URL: https://github.com/spazmodius/fastGuid
• Owner: spazmodius
• Created: 2015-02-21T03:25:22.000Z (almost 10 years ago)
• Default Branch: master
• Last Pushed: 2022-06-28T15:47:19.000Z (over 2 years ago)
• Last Synced: 2024-08-02T05:13:12.382Z (4 months ago)
• Topics: module, node
• Language: JavaScript
• Homepage:
• Size: 10.7 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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• awesome-blazingly-fast - fastGuid - Blazingly fast UUIDs in Node.js (JavaScript)

README

        
# Spaz's fastGuid

Blazingly fast UUIDs in Node.js.

## Install

`npm install spazmodius/fastGuid`

## Usage

```

const fastGuid = require('@spazmodius/fastGuid')

console.log(fastGuid())       // 21004214-9c2d-4730-813b-fbe35848fc00

console.log(fastGuid('D'))    // 21004214-9c2d-4730-813b-fbe35848fc01

console.log(fastGuid('N'))    // 210042149c2d4730813bfbe35848fc02

console.log(fastGuid('B'))    // {21004214-9c2d-4730-813b-fbe35848fc03}

// or

console.log(fastGuid.D())     // 21004214-9c2d-4730-813b-fbe35848fc04

console.log(fastGuid.N())     // 210042149c2d4730813bfbe35848fc05

console.log(fastGuid.B())     // {21004214-9c2d-4730-813b-fbe35848fc06}

```

## Note

This UUID generator is freakishly fast, and generates _unique_ UUIDs, in conformance with [RFC 9562](https://tools.ietf.org/html/rfc9562).  But it __does not__ generate _unguessable_ UUIDs.  In particulary, sequences of 256 UUIDs

will differ only in the last byte.  So if you've generated one, it's pretty easy to guess the next one.

However, you [should not be using UUIDs for unguessable secrets](https://datatracker.ietf.org/doc/html/rfc9562#section-8) anyway; that is explicitly not one of their

properties.  They are intended to be unique, not unguessable; please use a cryptographically random source if you need secrets.