server function error

[nandcello]

Which project does this relate to?

Create Tanstack App

Describe the bug

Summary

when starting a new tanstack app using pnpm create @tanstack/start@latest and then selecting Cloudflare, when navigating to server-func tab example, it errors with Error: [unenv] fs.readFile is not implemented yet!

Your Example Website or App

.

Steps to Reproduce the Bug or Issue

1. pnpm create @tanstack/start@latest
2. Choose Tailwind
3. Choose ESLint
4. Choose Cloudflare
5. pnpm run dev6. navigate to http://localhost:3000/demo/start/server-funcs
6. error shows

Expected behavior

As a user I expect the server-func demo in the starter to work

Screenshots or Videos

Platform

• OS: macOS
• Browser: Edge
• Version: 0.25.0

Additional context

No response

[jherr]

It's a Cloudflare specific issue and they will be supporting node:fs https://blog.cloudflare.com/nodejs-workers-2025/ . If it persists for a while then I'll fix it. But otherwise it seems to be just a dev issue.