Bug: ServerFn resolution failure with latest TanStack

[nick-potts]

Error when calling any exported server function (e.g. getSignInUrl) using latest TanStack Start:

TypeError: action is not a function

Works only after downgrading TanStack to the version bundled with the package.

Likely cause: server functions not registered with TanStack’s updated ServerFn mechanism.

[rgcottrell]

I just updated my project to the latest TanStack libraries without issue, but then I ran into this error after switching back to another branch. This went away after I deleted node_modules and reinstalled and also deleted the .tanstack directory. My guess is that the TanStack Vite plugin can get in a stuck state when changing package versions.

My first instinct now when I get weird errors after updating is to delete node_modules. That wasn't enough for this problem, but the error went away when I deleted .tanstack.

[nick-potts]

This was on a fresh project created with the cli.

[nicknisi]

This sounds like it's related to TanStack/router#6056.