Fresh NX + RSPack + React + Tailwind doesn't run serve

[kobayuri]

Current Behavior

Serve should work properly in a new NX workspace

Expected Behavior

Serve doesn't work

GitHub Repo

No response

Steps to Reproduce

1. npx create-nx-workspace (with configurations below)
2. RUST_BACKTRACE=full npx nx run testwithtailwind:serve --verbose --skip-nx-cache

❯ npx create-nx-workspace
NX Let's create a new workspace [https://nx.dev/getting-started/intro]

✔ Where would you like to create your workspace? · testwithtailwind
✔ Which stack do you want to use? · react
✔ What framework would you like to use? · none
✔ Integrated monorepo, or standalone project? · integrated
✔ Application name · testwithtailwind
✔ Which bundler would you like to use? · rspack
✔ Test runner to use for end to end (E2E) tests · none
✔ Default stylesheet format · tailwind
✔ Which CI provider would you like to use? · skip
✔ Would you like remote caching to make your build faster? · skip

NX Creating your v20.4.4 workspace.

✔ Installing dependencies with npm
✔ Successfully created the workspace: testwithtailwind.

Nx Report

Node           : 22.14.0
OS             : darwin-arm64
Native Target  : aarch64-macos
npm            : 10.9.2

nx                     : 20.4.4
@nx/js                 : 20.4.4
@nx/jest               : 20.4.4
@nx/eslint             : 20.4.4
@nx/workspace          : 20.4.4
@nx/devkit             : 20.4.4
@nx/eslint-plugin      : 20.4.4
@nx/module-federation  : 20.4.4
@nx/react              : 20.4.4
@nx/rspack             : 20.4.4
@nx/web                : 20.4.4
typescript             : 5.7.3
---------------------------------------
Registered Plugins:
@nx/rspack/plugin
@nx/eslint/plugin
@nx/jest/plugin

Failure Logs

❯ RUST_BACKTRACE=full npx nx run testwithtailwind:serve --verbose --skip-nx-cache

> nx run testwithtailwind:serve

> rspack serve --node-env=development

●  ━━━━━━━━━━━━━━━━━━━━━━━━━ (31%) building /Users/yuri.kobashigawa/Projects/testwithtailwind/node_modules/source-map-loader/dist/cjs.js!/Users/yuri.kobashigawa/Projects/testwithtailwind/node_modules/webpack-dev-server/client/utils/stripAnsi.js                            
●  ━━━━━━━━━━━━━━━━━━━━━━━━━ (31%) building /Users/yuri.kobashigawa/Projects/testwithtailwind/node_modules/source-map-loader/dist/cjs.js!/Users/yuri.kobashigawa/Projects/testwithtailwind/node_modules/webpack-dev-server/client/utils/stripAnsi.js                            <i> [webpack-dev-server] Project is running at:
<i> [webpack-dev-server] Loopback: http://localhost:4200/
<i> [webpack-dev-server] On Your Network (IPv4): http://192.168.0.148:4200/
<i> [webpack-dev-server] On Your Network (IPv6): http://[fe80::1]:4200/
<i> [webpack-dev-server] Content not from webpack is served from '/Users/yuri.kobashigawa/Projects/testwithtailwind/apps/testwithtailwind/public' directory
●  ━━━━━━━━━━━━━━━━━━━━━━━━━ (100%) emitting after emit                                                                                                                                                                                                                         
●  ━━━━━━━━━━━━━━━━━━━━━━━━━ (100%) emitting after emit                                                                                                                                                                                                                         Entrypoint main [big] 1.37 MiB = main.js 1.36 MiB main.css 11.5 KiB
chunk (runtime: main) main.css, main.js (main) 11.4 KiB (css/mini-extract) 1.3 MiB (javascript) 30.7 KiB (runtime) [entry] [rendered]
●  ━━━━━━━━━━━━━━━━━━━━━━━━━ (8%) setup compilation                                                                                                                                                                                                                             
●  ━━━━━━━━━━━━━━━━━━━━━━━━━ (0%) emitting after emit                                                                                                                                                                                                                           Panic occurred at runtime. Please file an issue on GitHub with the backtrace below: https://github.com/web-infra-dev/rspack/issues
Message:  should have module
Location: crates/rspack_core/src/compiler/module_executor/execute.rs:81

Run with COLORBT_SHOW_HIDDEN=1 environment variable to disable frame filtering.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ BACKTRACE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
 1: _napi_register_module_v1
    at <unknown source file>
 2: _napi_register_module_v1
    at <unknown source file>
 3: _napi_register_module_v1
    at <unknown source file>
 4: _napi_register_module_v1
    at <unknown source file>
 5: _wasmer_vm_f64_nearest
    at <unknown source file>
 6: _wasmer_vm_f64_nearest
    at <unknown source file>
 7: _napi_register_module_v1
    at <unknown source file>
 8: _napi_register_module_v1
    at <unknown source file>
 9: _napi_register_module_v1
    at <unknown source file>
10: _napi_register_module_v1
    at <unknown source file>
11: _napi_register_module_v1
    at <unknown source file>
12: _napi_register_module_v1
    at <unknown source file>
13: _napi_register_module_v1
    at <unknown source file>
14: __pthread_deallocate
    at <unknown source file>

Package Manager Version

No response

Operating System

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

Additional Information

Seems related to Tailwind as when I comment it in postcss.config.js, the issue gracefully disappear

[danduh]

Have the same issue.

Setting in package.json "@rspack/core": "1.2.2", solves this.
Starting from 1.2.3 -> 1.2.5 leads to the same error.
So I think this bug is on rspack side.