export full declaration of AppRouter for use in another project

So I have my API server and my web app. They're separate projects and initially I can import AppRouter type with relative paths but it feels messy, but it's ok. Now I have implemented some app specific typescrpt resolve/alias for imports, all my types break as the web project can't resolve those aliases that are present in the api project without sharing the same aliases.

I wonder if there is some way to codegen export type AppRouterexport type AppRouter in to a full declaration that is standalone? Then I can just import that one file without it needing to understand the layout of the other project?

Any help appreciated