Learn how to seamlessly implement email and OAuth authentication in Next.js apps using NextAuth.js, a library designed for authentication.

Authentication is the act of proving that someone is who they say they are — confirming the identity of a user in an application, for example. In this tutorial, we’ll learn how to implement authentication in Next.js apps using NextAuth.js, which is a library specifically designed to handle authentication solutions in Next.js apps.

According to the documentation, “NextAuth.js is a complete open source authentication solution for Next.js applications. It is designed from the ground up to support Next.js and Serverless.”

Prerequisites

To follow along with this tutorial, you’ll need the following:

• A basic understanding of React
• A basic understanding of MongoDB or any other database
• A basic understanding of how authentication works

Nice-to-haves:

• Prior experience with the Next.js framework

Building an authentication API

In this tutorial, we are going to build a basic authentication API using the built-in Next.js API routes. The authentication will consist of a passwordless email sign-in and open authentication with Google. Then we’ll look into securing API endpoints and protected pages.

All the code written in this tutorial is available on this GitHub repository.

#next #api #react #javascript #developer