What data are you trying to pass to the user?

As you can't with middleware directly pass data to other parts of the application.

Ok, actually I am learning next js. I want to implement role based authentication.
Can you suggest some methods.

I tried with nextAuth but the package is depreciated.

I want to extract user id form jwt, fetch user data with that and then provide the data to routes

What data are you fetching, though

Is it a large object?

No, it is a single JSON object .

I am fetching it from a mongo server

What is the data??! 😂

Is it their profile? Is it their role stuff?

Yes

"I tried with nextAuth but the package is depreciated."

That is very much not the case, what do you mean it's deprecated?

That package name doesn't look right. Check the usage on the official next-auth webpage: https://next-auth.js.org/

I did checked that

No, check how you're using the package.

It is working with next-auth version 4.22.1

I am new to next, is it a good framework for backend? Or I should stick with express

For backend