[Bug]: Error using url(...) in css file

[alefduarte]

Version

System:
    OS: Windows 10 10.0.19045
    CPU: (16) x64 11th Gen Intel(R) Core(TM) i7-11850H @ 2.50GHz
    Memory: 2.82 GB / 31.67 GB
  Browsers:
    Edge: Chromium (127.0.2651.86)
    Internet Explorer: 11.0.19041.4355

Details

I have a CSS file with my local font

@font-face {
  font-family: 'Gilroy';
  font-style: normal;
  font-weight: 300;
  src: url('../assets/fonts/Gilroy-Light.otf');
}

When I build it, I get the error

File: C:\xxx\packages\ui\dist\context\context.css:1:1
  × Module not found: Can't resolve '/static/font/Gilroy-Light.otf' in 'C:\xxx\packages\ui\dist\context'
   ╭─[5:36]
 3 │ import ___CSS_LOADER_API_IMPORT___ from "../../../../node_modules/@rsbuild/core/compiled/css-loader/api.js";
 4 │ import ___CSS_LOADER_GET_URL_IMPORT___ from "../../../../node_modules/@rsbuild/core/compiled/css-loader/getUrl.js";
 5 │ var ___CSS_LOADER_URL_IMPORT_0___ = new URL("/static/font/Gilroy-Light.otf", import.meta.url);
   ╰────

If I check the built CSS in the dist folder, it changes the file to

@font-face {
  font-family: Gilroy;
  font-style: normal;
  font-weight: 300;
  src: url(/static/font/Gilroy-Light.otf);
}

If I manually change the src to

  src: URL(../static/font/Gilroy-Light.otf);

then it works.
I also tried to use

tools: {
    cssLoader: {
      url: false,
    },
  },

but then the fonts are not exported.

I tried an example using codesandbox and in this example, only by using URL(...) I got an error:

error   Compile error: 
Failed to compile, check the errors for troubleshooting.
File: /project/workspace/packages/ui/src/styles/fonts.css?__rslib_entry__:1:1
  × Module build failed:
  ╰─▶   × TypeError: Cannot read properties of undefined (reading '__esModule')
        │     at handleExports (file:///project/workspace/node_modules/.pnpm/@rslib+core@0.1.4_typescript@5.7.2/node_modules/@rslib/core/dist/libCssExtractLoader.js:34:45)
        │     at file:///project/workspace/node_modules/.pnpm/@rslib+core@0.1.4_typescript@5.7.2/node_modules/@rslib/core/dist/libCssExtractLoader.js:121:9
        │     at /project/workspace/node_modules/.pnpm/@rspack+core@1.1.6_@swc+helpers@0.5.15/node_modules/@rspack/core/dist/index.js:6301:13

if I try url: false it builds fine but the font file is not exported.

Reproduce link

https://codesandbox.io/p/devbox/sx9t7q

Reproduce Steps

1. run pnpm i to install all dependencies
2. run pnpm build --filter=@acme/ui to build only the ui package.

You'll see the error already

[Timeless0911]

It has been fixed by #573 and released in v0.1.5. You can update @rslib/core to latest version.