NextAuth.js Authentication

NextAuth.js is a complete authentication solution for Next.js applications, offering built-in support for various authentication providers.

Features

Built for Next.js
- Seamless integration
- API routes support
- Middleware support
- TypeScript ready
OAuth Provider Integration
- Multiple provider support
- Social login providers
- Custom provider support
- Easy configuration
Database Session Support
- Multiple database adapters
- Secure session handling
- JWT session support
- Custom session handling
Serverless Compatible
- Edge runtime support
- Vercel deployment
- Netlify deployment
- Platform agnostic

Implementation

Basic Setup

import NextAuth from 'next-auth';
import Providers from 'next-auth/providers';
 
export default NextAuth({
  providers: [
    Providers.GitHub({
      clientId: process.env.GITHUB_ID,
      clientSecret: process.env.GITHUB_SECRET,
    }),
    Providers.Google({
      clientId: process.env.GOOGLE_ID,
      clientSecret: process.env.GOOGLE_SECRET,
    }),
  ],
});

Protected API Route

import { getSession } from 'next-auth/react';
 
export default async function handler(req, res) {
  const session = await getSession({ req });
 
  if (session) {
    // Signed in
    res.json({ content: 'Protected content' });
  } else {
    // Not Signed in
    res.status(401).json({ error: 'You must be signed in.' });
  }
}

Best Practices

Use environment variables
Implement proper error handling
Configure secure callbacks
Regular security updates

Additional Resources

Firebase Auth 🧪 Testing & Deployment