Summary

Hi Turbo team 👋,
I'm working in a monorepo setup using TurboRepo and Angular 20, and I'm running into a strange issue.

I have a shared UI library that contains components, enums, pipes, services, handlers, etc. Everything builds and runs fine — until I try to add a new handler (just a basic class). As soon as I do, I start getting a TypeScript error:

TS2307: Cannot find module '@instapos/ui' or its corresponding type declarations.

What's confusing is:

The library builds successfully

Other files from the same library are imported and work without any problems

The new file is properly exported from public-api.ts

The error only shows up after adding this new file — and only in some scenarios (like in dev mode or when using Turbo’s persistent tasks)

I'm not sure if it's related to how Turbo handles watch mode, incremental builds, or dependency graph caching.

Has anyone seen this behavior before? I'd really appreciate any help in figuring out what’s going wrong or how to properly structure this setup in Turbo + Angular.

this is also the whole set up of the lib if it helps

Thanks!

Additional information

Error: src/app/shared/services/translation/translation.service.ts:5:49 - error TS2307: Cannot find module '@instapos/ui' or its corresponding type declarations.

Example

No response