`getCSSRecursively ` call stack size exceeded when using `manualChunks`

[kevinehosford]

Which project does this relate to?

Start

Describe the bug

i have run into this when trying different manualChunks configurations. i was able to reproduce it in the repo below. the example is not really my intended configuration but just shows how it can happen.

this example also intentionally has a circular dependency because my other project has them: https://github.com/kevinehosford/start-basic-overflow/blob/main/src/routes/posts.tsx#L4-L5.

i'm wondering, is it a bug that this recursive function causes a stack overflow?

Your Example Website or App

https://github.com/kevinehosford/start-basic-overflow

Steps to Reproduce the Bug or Issue

1. set up a tanstack start project with manualChunks and a circular dependency in the application code
2. npm run build
   -> see getCSSRecursively lead to a call stack overflow exception during the SSR build

Expected behavior

no stack overflow exception like with the client bundle build

Screenshots or Videos

No response

Platform

• Router / Start Version: 1.131.31
• OS: macOS
• Bundler: vite
• Bundler Version: 6.3.5

Additional context

No response

[ImLunaHey]

from testing changing the recursive call to a while loop fixes the issue.