We've been using Mapperly (https://mapperly.riok.app/), after a migration from AutoMapper, in our production application. I'm having a good experience, and we kind of like the holistic of this library.

So far, there have been no surprises, and the library warns about potential issues very explicitly, I quite like it.

Of course, if it's just a handful of fields that need mapping, than write manually is the way to go, specially if said fields require a custom mapping, where the library would not facilitate.