Possible bug with middleware typings

[arackaf]

Which project does this relate to?

Router

Describe the bug

Possibly invalid type error

Your Example Website or App

https://github.com/arackaf/tanstack-start-blog-dataloading/tree/special/start-bug-1

Steps to Reproduce the Bug or Issue

This repo https://github.com/arackaf/tanstack-start-blog-dataloading/tree/special/start-bug-1 -- note the branch! special/start-bug-1
npm i

open routes/app/epics/$epicId/edit.tsx

Note the middleware - lines 20 and 40

Basically I'm trying to add some context on the server, AFTER the serverFn runs, and then read that context on the client. Both error out with TS, currently. Not sure if it's a bug, or a skill issue on my part :)

Expected behavior

no errors

Screenshots or Videos

n/a

Platform

n/a

Additional context

No response