Vue version

3

Link to minimal reproduction

https://dealerpriest-congenial-zebra-xp7p5qrrwf9v7r.github.dev/

Steps to reproduce

• go to root of repo
• run pnpm build reactivity --types as described here: https://github.com/vuejs/core/tree/main/packages/reactivity#readme
• check if there is anything in temp folder
• its not

What is expected?

a file called reactivity.api.md to be created in the temp folder

What is actually happening?

Seems like its performing a normal build creating a dist folder

System Info

No response

Any additional comments?

No response

Yeah that should likely be removed from the README, we actually don't generate that.