fastify-nextjs VS next-auth

I like fastify more than express due to the great opinions (json schema, hooks etc). I use fastify + the fastify-nextjs plugin. It works great and lets you expose custom request decorations from node.js to next.js.

Maybe this can help you too: https://github.com/fastify/fastify-nextjs

The only drawback is the slow startup time of next.js, which becomes really annoying with huge next.js projects. But for smaller projects, fastify-nextjs is fine.

NextAuth.js is not perfect. One of the shortcomings is that it currently does not implement federated logout. This means that even if a user signs out of the Next.js app, he does NOT get signed out of the Cognito user pool client. As a consequence, the user is not really being logged out (i.e he is able to login again without providing the credentials). You can read more about this problem in this Github thread.

NextAuth for adding auth

Let's learn a bit about Descope and how to use it with Auth.js (next-auth) to protect our Next.js app with role-based access control (RBAC).

https://github.com/nextauthjs/next-auth/issues/5647#issuecom...

Next Auth CognitoProvider Internal Library: https://github.com/nextauthjs/next-auth/blob/v4/packages/next-auth/src/providers/cognito.ts

I mentioned this in an age-old discussion on NextAuth GitHub repo.

Authentication is a fundamental part of most web applications. Integrating authentication into your Next.js app can be simplified with NextAuth, a powerful authentication library that supports various authentication methods. However, the documentation around setting up NextAuth with the "Credentials" auth provider might not be as clear as you'd hope. My implementation is greatly enriched and partially based on Next-Auth docs and the following github thread.

For Auth: https://authjs.dev/ - works like a charm with Svelte https://authjs.dev/reference/sveltekit

NextAuth.js

I'm surprised nobody mentioned https://authjs.dev/