Introduction to Auth.js
Introduction to Auth.js
Section titled “Introduction to Auth.js”Introduction
Section titled “Introduction”Auth.js (formerly NextAuth.js) is the most popular authentication library for Next.js. It handles sessions, providers (Google, GitHub, email, credentials), CSRF protection, and database adapters — so you don’t have to build authentication from scratch.
Why Do We Need This?
Section titled “Why Do We Need This?”Building authentication yourself is complex and error-prone. You need to handle:
- Password hashing and verification
- Session management (JWT or database)
- OAuth flows (Google, GitHub)
- CSRF protection
- Secure cookie management
Auth.js handles all of this with a simple configuration.
What Auth.js Provides
Section titled “What Auth.js Provides”| Feature | Description |
|---|---|
| Multiple providers | Google, GitHub, credentials, email, and 80+ more |
| Session strategies | JWT (stateless) or database (stateful) sessions |
| Built-in security | CSRF tokens, secure cookies, HTTPS enforcement |
| Database adapters | Prisma, Drizzle, MongoDB, and more |
| TypeScript support | Fully typed session and JWT callbacks |