Function getCssAssetDirname

packages/vite/src/node/plugins/css.ts:481–502

(
    cssAssetName: string,
    originalFileName?: string,
  )

      : rolldownOptionsOutput
  )?.assetFileNames
  const getCssAssetDirname = (
    cssAssetName: string,
    originalFileName?: string,
  ) => {
    const cssAssetNameDir = path.dirname(cssAssetName)
    if (!assetFileNames) {
      return path.join(config.build.assetsDir, cssAssetNameDir)
    } else if (typeof assetFileNames === 'string') {
      return path.join(path.dirname(assetFileNames), cssAssetNameDir)
    } else {
      return path.dirname(
        assetFileNames({
          type: 'asset',
          name: cssAssetName,
          names: [cssAssetName],
          originalFileName,
          originalFileNames: originalFileName ? [originalFileName] : [],
          source: '/* vite internal call, ignore */',
        }),
      )
    }
  }

  function getCssBundleName() {
    const cached = cssBundleNameCache.get(config)