DTK0021: AsyncLocalStorage Not Set

Package: @vitejs/devtools

Message

AsyncLocalStorage is not set, it likely to be an internal bug of Vite DevTools

Cause

The RpcFunctionsHost.getCurrentRpcSession() method was called, but the internal AsyncLocalStorage instance used to track the current RPC session was never initialized. This storage is set up during WebSocket server creation and should always be available when RPC handlers execute. If it is missing, something went wrong during the DevTools initialization process.

Example

This error cannot be triggered by user code under normal circumstances. It would only occur if the internal wiring between the WebSocket server and the RPC host is broken.

export default defineDevToolsPlugin({
  name: 'my-plugin',
  setup(context) {
    // This would throw DTK0021 only if the internal AsyncLocalStorage
    // was never wired up (an internal bug)
    const session = context.rpc.getCurrentRpcSession()
  },
})

Fix

This is an internal error in Vite DevTools. If you encounter it, please report it at https://github.com/vitejs/devtools/issues with:

• Your Vite DevTools version
• Steps to reproduce the issue
• Any relevant console output

Source

packages/core/src/node/host-functions.ts