I created a boilerplate repo for my new Nextjs projects. It doesn't require any backend servers, all the logic is handled by Nextjs.
Check it out at https://github.com/abeledovictor/nextjs-prisma-supabase-auth
Please let me know if something isn't working or if you want to see any other basic features added. If you want to implement only a feature of it, see the commit history. 💖