Vite + Bun: node:async_hooks error in browser with @tanstack/react-start-client

[estatetrax]

Which project does this relate to?

Router

Describe the bug

When using @tanstack/react-start-client, the browser throws:

Module "node:async_hooks" has been externalized for browser compatibility. Cannot access "node:async_hooks.AsyncLocalStorage" in client code.
Uncaught TypeError: import_node_async_hooks.AsyncLocalStorage is not a constructor

Your Example Website or App

localhost dev server

Steps to Reproduce the Bug or Issue

To Reproduce

Create a minimal Vite + Bun + React project.
Install latest @tanstack/start and @tanstack/react-start-client.
Create a minimal Vite + Bun + React project.
Install latest @tanstack/start and @tanstack/react-start-client.
Use this main.tsx:

import * as React from "react";
import { createRoot } from "react-dom/client";
import { StartClient } from "@tanstack/react-start-client";

const root = createRoot(document.getElementById("root")!);
root.render();

Start the Vite dev server and open in browser.

Expected behavior

The app should render without Node.js-only errors in the browser.

Screenshots or Videos

No response

Platform

OS: Ubuntu 24.04
Bun: latest
Vite: latest
@tanstack/start: 1.120.20
@tanstack/react-start-client: 1.166.30
Browser: Chrome 123

Additional context

Removing @tanstack/react-start-client eliminates the error.
@tanstack/react-query works fine.
The error appears even with no other dependencies or routes.

[schiller-manuel]

please provide a complete minimal reproducer project using latest version of start. also be advised that you shall not use react-start-client package directly but through the react-start package as documented