@nx/rspack does not convert webpack to rspack in my NestJS apps

[rujorgensen]

Current Behavior

Neither of the generators @nx/rspack:convert-config-to-rspack-plugin or @nx/rspack:convert-webpack converts the webpack configuration of a NestJS application to rspack.

Expected Behavior

I'd expect:

1. A rspack.config.js configuration file to be generated inspired from the current webpack.config.js
2. The build target of the converted application project to be updated to use the new rspack configuration
3. The original webpack.config.js-file to be deleted

GitHub Repo

https://github.com/rujorgensen/nx-webpack-rspack-conf-issue

Steps to Reproduce

1. Create a fresh workspace: npx create-nx-workspace nx-workspace --preset=nest --no-interactive
2. Add @nx/rspack to the workspace: cd nx-workspace && nx add @nx/rspack
3. Convert the webpack configuration to rspack:
   a. npx nx g @nx/rspack:convert-webpack --project=nx-workspace
   --OR--
   b. npx nx g @nx/rspack:convert-config-to-rspack-plugin --project=nx-workspace

Current result:
3.a. Completes without touching any files
3.b. Fails with "NX Could not find any projects to migrate."

Nx Report

nx (global)            : 20.0.0
nx                     : 20.3.0
@nx/js                 : 20.3.0
@nx/jest               : 20.3.0
@nx/eslint             : 20.3.0
@nx/workspace          : 20.3.0
@nx/devkit             : 20.3.0
@nx/eslint-plugin      : 20.3.0
@nx/module-federation  : 20.3.0
@nx/nest               : 20.3.0
@nx/node               : 20.3.0
@nx/rspack             : 20.3.0
@nx/web                : 20.3.0
@nx/webpack            : 20.3.0
typescript             : 5.6.3
---------------------------------------
Registered Plugins:
@nx/webpack/plugin
@nx/eslint/plugin
@nx/jest/plugin
@nx/rspack/plugin

Failure Logs

Package Manager Version

❯ npm -v 10.2.4

Operating System

• macOS
• Linux
• Windows
• Other (Please specify)

Additional Information

Running on Windows in WSL.