Cannot load font files referenced in a node_modules css file

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Describe the bug

I’m working on a new project at work, and we’re using a node_modules dependency containing all the company css. The css file itself loads Font Awesome files with relative paths:

@font-face {
    font-family: Font Awesome\ 5 Free;
    font-style: normal;
    font-weight: 400;
    font-display: auto;
    src: url(../fonts/fa/fa-regular-400.eot);
    src: url(../fonts/fa/fa-regular-400.eot?#iefix) format("embedded-opentype"), url(../fonts/fa/fa-regular-400.woff2) format("woff2"), url(../fonts/fa/fa-regular-400.woff) format("woff"), url(../fonts/fa/fa-regular-400.ttf) format("truetype"), url(../fonts/fa/fa-regular-400.svg#fontawesome) format("svg")
}

I import the dependency like this in App.vue

<style lang="scss">
@import "@company/css-library/assets/css/styles.css";
</style>

The issue is that the FA fonts are then loaded relatively to the ./src folder, which leads to this 404 error in the browser: GET http://localhost:3000/fonts/fa/fa-solid-900.woff2 net::ERR_ABORTED 404 (Not Found)

How can I solve this?

Reproduction

I cannot share the source, but I guess that the issue will arise with any css in a node_modules dep, that will load a font file with a relative path.

System Info

• vite version: ^2.0.0-beta.34
• Operating System: Windows 7
• Node version: 12.16.3
• Package manager (npm/yarn/pnpm) and version: npm 6.14.4

Logs (Optional if provided reproduction)

vite:config bundled config file loaded in 376ms +0ms
  vite:config using resolved config: {
  vite:config   plugins: [
  vite:config     'alias',
  vite:config     'vite:dynamic-import-polyfill',
  vite:config     'vite:resolve',
  vite:config     'vite:html',
  vite:config     'vite:css',
  vite:config     'vite:esbuild',
  vite:config     'vite:json',
  vite:config     'vite:wasm',
  vite:config     'vite:worker',
  vite:config     'vite:asset',
  vite:config     'vite:vue',
  vite:config     'vite:css-post',
  vite:config     'vite:build-html',
  vite:config     'commonjs',
  vite:config     'vite:data-uri',
  vite:config     'vite:define',
  vite:config     'rollup-plugin-dynamic-import-variables',
  vite:config     'vite:import-analysis',
  vite:config     'vite:esbuild-transpile',
  vite:config     'vite:terser',
  vite:config     'vite:size'
  vite:config   ],
  vite:config   alias: [
  vite:config     {
  vite:config       find: /^\/@vite\//,
  vite:config       replacement: 'C:\\Users\\[redacted]\\node_modules\\vite\\dist\\client/'
  vite:config     },
  vite:config     {
  vite:config       find: '@',
  vite:config       replacement: 'C:\\Users\\[redacted]\\src'
  vite:config     }
  vite:config   ],
  vite:config   build: {
  vite:config     base: '/',
  vite:config     target: [ 'es2019', 'edge16', 'firefox60', 'chrome61', 'safari11' ],
  vite:config     polyfillDynamicImport: true,
  vite:config     outDir: 'dist',
  vite:config     assetsDir: 'assets',
  vite:config     assetsInlineLimit: 4096,
  vite:config     cssCodeSplit: true,
  vite:config     sourcemap: false,
  vite:config     rollupOptions: {},
  vite:config     commonjsOptions: { include: [Array], extensions: [Array] },
  vite:config     minify: 'terser',
  vite:config     terserOptions: {},
  vite:config     cleanCssOptions: {},
  vite:config     write: true,
  vite:config     emptyOutDir: null,
  vite:config     manifest: false,
  vite:config     lib: false,
  vite:config     ssr: false,
  vite:config     ssrManifest: false
  vite:config   },
  vite:config   define: { __VUE_OPTIONS_API__: true, __VUE_PROD_DEVTOOLS__: false },
  vite:config   ssr: { external: [ 'vue', '@vue/server-renderer' ] },
  vite:config   configFile: '/Users/[redacted]/vite.config.ts',
  vite:config   inlineConfig: {
  vite:config     root: undefined,
  vite:config     mode: undefined,
  vite:config     configFile: undefined,
  vite:config     logLevel: undefined,
  vite:config     clearScreen: undefined,
  vite:config     build: {}
  vite:config   },
  vite:config   root: '/Users/[redacted]',
  vite:config   command: 'build',
  vite:config   mode: 'production',
  vite:config   isProduction: true,
  vite:config   optimizeCacheDir: '\\Users\\[redacted]\\node_modules\\.vite',
  vite:config   server: {},
  vite:config   env: { BASE_URL: '/', MODE: 'production', DEV: false, PROD: true },
  vite:config   assetsInclude: [Function: assetsInclude],
  vite:config   logger: {
  vite:config     info: [Function: info],
  vite:config     warn: [Function: warn],
  vite:config     error: [Function: error],
  vite:config     clearScreen: [Function: clearScreen]
  vite:config   }
  vite:config } +12ms
building for production...
[vite:css] ENOENT: no such file or directory, open 'C:\Users\[redacted]\fonts\fa\fa-regular-400.eot'
file: /Users/[redacted]/src/App.vue?vue&type=style&index=0&lang.scss
error during build:
Error: ENOENT: no such file or directory, open 'C:\Users\[redacted]\fonts\fa\fa-regular-400.eot'

[yyx990803]

It’s the same issue as #1629 and is fixed in beta.37.

[scambier]

It works for npm run dev but fails for npm run build with a weird error:

postcss.config.js:8:26 - error 7006: Parameter 't' implicitly has an 'any' type.
 5 |         'postcss-url': [
 6 |             {
 7 |                 filter: t => {
   |                               ~
 8 |                     return /([a-zA-Z0-9\s_\\.\-\(\):])+(.woff|.woff2)$/i.test(t.url);
 9 |                 },

And if I add an any type to t, it obviously tells me that typings are for .ts files…

I’ll continue with my workaround in the meantime, thank you though 😃