I am building a turborepo with four Next.js apps that all require user login and authentication. I am using Prisma with Postgres and Next Auth for authentication and I would like to build one auth app that handles all authentication. Basically, a custom wrapper for Next Auth that takes in a redirect callback URL and redirects the user to that URL after being authenticated. Are there any examples or resources to do this? I this wrapper could and should probably be a custom express server that takes these params and creates the necessary Next Auth redirect.

Yes you can build an authentication service package, and share data with any package you want, exporting it from your new auth workstation, and declaring in your app package with --> "": "*" ☺️