[Module Federation Dev Server] Error EEXIST when rebuilding exposed modules

[ridaoc19]

I encountered an issue when using the Module Federation with the configuration from the quick start guide (Module Federation Quick Start).

Every time I make changes to the Button component exposed from the common package, the following error is triggered:

common: Error: EEXIST: file already exists, mkdir 'D:\wallet-wise\packages\clients\common\dist' common: at createError (D:\wallet-wise\node_modules@rsbuild\core\compiled\rsbuild-dev-middleware\index.js:1814:23) common: at Volume.mkdirBase (D:\wallet-wise\node_modules@rsbuild\core\compiled\rsbuild-dev-middleware\index.js:3470:42) common: at Immediate.<anonymous> (D:\wallet-wise\node_modules@rsbuild\core\compiled\rsbuild-dev-middleware\index.js:2424:31) common: at process.processImmediate (node:internal/timers:491:21) { common: code: 'EEXIST', common: path: 'D:\wallet-wise\packages\clients\common\dist' common: }

This issue seems to happen during the rebuild process when the development server tries to create the dist directory, even though it already exists. It also interrupts the workflow since changes are not properly reflected in the UI.

Steps to Reproduce

1. Set up the Module Federation Dev Server with the configuration provided in the quick start guide.
2. Expose a simple component (e.g., Button) from a package (common in this case).
3. Make a change in the Button component.
4. Observe the error in the console.

Expected Behavior

• The development server should skip creating the dist directory if it already exists, or handle the scenario gracefully.
• Changes in exposed components should trigger a rebuild without errors.

Environment

• Node.js Version: 22.12.0
• OS: Windows

Additional Notes

• The configuration used matches the quick start guide:
  • The common package exposes the Button component.
  • The ui package consumes the exposed component.