autoCodeSplitting causes entire app re-render

[pavle99]

Which project does this relate to?

Router

Describe the bug

When autoCodeSplitting is set to true in vite.config.ts, every time I change anything in a route file, entire app re-renders. If i extract the part I want to change in a separate file (so not only component but new file) then only the component itself re-renders.

Removing autoCodeSplitting from vite.config.ts makes everything work normally, ie. changing something in a route.tsx file doesn't re-render the entire app, just the part that got changed.

Your Example Website or App

https://stackblitz.com/edit/tanstack-router-1hpdjf?file=src%2Froutes%2Findex.tsx&preset=node

Steps to Reproduce the Bug or Issue

Change anything inside any route file.
Entire app re-renders.

Expected behavior

Expected only the DOM node where the change happens to re-render.

Screenshots or Videos

No response

Platform

• OS: Windows 11
• Browser: Chrome
• Version: 130.0.6723.71 (Official Build) (64-bit)

Additional context

No response

[SeanCassiere]

We'll need to wait for some resolution on the #2316 branch, as that contains many related changes as to how autoCodeSplitting plays with the rest of the dev environment.