Rolldown RSC build fails with "Plugin driver is already dropped"

[aartisonigra]

Which project does this relate to?

Router

Describe the bug

Description

A regression occurs during the Rolldown RSC production build where this.resolve() throws:

Plugin driver is already dropped

inside:

tanstack-start-core::server-fn:rsc

Affected Versions

• @tanstack/react-start@1.167.63
• @tanstack/react-start@1.167.64

Not Affected

• @tanstack/react-start@1.167.57

Reproduction

1. Create a TanStack Start app
2. Enable Rolldown RSC production build
3. Run:

pnpm build

Actual Result

Build crashes with:

Plugin driver is already dropped

Expected Result

The production build should complete successfully without crashing.

Complete minimal reproducer

https://github.com/aartisonigra/router

Steps to Reproduce the Bug

1. Clone the reproduction repository

git clone https://github.com/aartisonigra/router.git

2. Install dependencies

pnpm install

3. Run the production build

pnpm build

4. Observe the build failure during the Rolldown RSC production build with:

Plugin driver is already dropped

Expected behavior

As a user, I expected the Rolldown RSC production build to complete successfully without crashing, but I am seeing the following error during pnpm build:

Plugin driver is already dropped

Screenshots or Videos

No response

Platform

• Router / Start Version: [e.g. 1.121.0]
• OS: [e.g. macOS, Windows, Linux]
• Browser: [e.g. Chrome, Safari, Firefox]
• Browser Version: [e.g. 91.1]
• Bundler: [e.g. vite]
• Bundler Version: [e.g. 7.0.0]

Additional context

No response