https://github.com/flaviodelgrosso/fastify-better-auth

Fastify plugin to simplify the integration of the Better Auth library
https://github.com/flaviodelgrosso/fastify-better-auth

authentication better-auth fastify fastify-plugin nodejs

Last synced: about 1 year ago
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Fastify plugin to simplify the integration of the Better Auth library

• Host: GitHub
• URL: https://github.com/flaviodelgrosso/fastify-better-auth
• Owner: flaviodelgrosso
• License: isc
• Created: 2025-02-05T18:46:07.000Z (over 1 year ago)
• Default Branch: master
• Last Pushed: 2025-03-31T03:10:46.000Z (about 1 year ago)
• Last Synced: 2025-03-31T04:22:32.641Z (about 1 year ago)
• Topics: authentication, better-auth, fastify, fastify-plugin, nodejs
• Language: JavaScript
• Homepage: https://www.npmjs.com/package/fastify-better-auth
• Size: 514 KB
• Stars: 13
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

          
# Fastify Better Auth

[![NPM

version](https://img.shields.io/npm/v/fastify-better-auth.svg?style=flat)](https://www.npmjs.com/package/fastify-better-auth)

[![NPM

downloads](https://img.shields.io/npm/dm/fastify-better-auth.svg?style=flat)](https://www.npmjs.com/package/fastify-better-auth)

[![CI](https://github.com/flaviodelgrosso/fastify-better-auth/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/flaviodelgrosso/fastify-better-auth/actions/workflows/ci.yml)

[![codecov](https://codecov.io/gh/flaviodelgrosso/fastify-better-auth/graph/badge.svg?token=XF947FKO29)](https://codecov.io/gh/flaviodelgrosso/fastify-better-auth)

Fastify Better Auth is a Fastify plugin that simplifies the integration of the [Better Auth](https://www.better-auth.com) library into your Fastify applications. This plugin allows you to easily register authentication routes using Better Auth, providing a seamless authentication experience.

## Install

```bash

npm install fastify-better-auth

```

### Usage

```javascript

import { betterAuth } from 'better-auth';

import { drizzleAdapter } from 'better-auth/adapters/drizzle';

import FastifyBetterAuth from 'fastify-better-auth';

import fp from 'fastify-plugin';

export const auth = betterAuth({

  trustedOrigins: [env.auth.URL],

  database: drizzleAdapter(db, {

    provider: 'pg',

    usePlural: true,

  }),

  emailAndPassword: {

    enabled: true,

  },

});

async function authPlugin(fastify) {

  await fastify.register(FastifyBetterAuth, { auth });

}

export default fp(authPlugin, {

  name: 'auth-plugin',

});

```

You can now access the auth instance from the Fastify instance. For example if you want get the current session you can do:

```javascript

const session = await fastify.auth.api.getSession({

  headers: fromNodeHeaders(req.headers),

});

```

## License

This project is licensed under the ISC License - see the [LICENSE](LICENSE) file for details.