Cannot find module 'bun' in Tanstack monorepo

[DeckardGer]

Which project does this relate to?

Router

Describe the bug

I can't import any bun libraries like s3, redis, hashing/crypto, etc in my Tanstack monorepo project. I get the error: "Cannot find module 'bun'". I have tested both in server action files, as well as a s3 package which gets imported into the web project.

Your Example Website or App

https://github.com/DeckardGer/bun-tanstack-test

Steps to Reproduce the Bug or Issue

1. bun install
2. bun run dev
3. Navigate to localhost:3001/api/bun-test
4. Look in server logs for error

Expected behavior

I should be receiving a hash created using the hash library from bun

Screenshots or Videos

Platform

• Router / Start Version: 1.141.1
• OS: MacOS
• Browser: Arc
• Browser Version: 1.140.0
• Bundler: Vite
• Bundler Version: 7.0.2

Additional context

No response