Function writeBundle

vite.config.default.ts:28–83

(outputOptions, bundle)

  return {
    name: 'minify-plugin',
    async writeBundle(outputOptions, bundle) {
      for (const file of Object.values(bundle)) {
        if (
          file.type === 'asset' &&
          (file.fileName.endsWith('.cjs.map') || file.fileName.endsWith('.css'))
        ) {
          const isCSS = file.fileName.endsWith('.css');
          const inputFilePath = resolve(
            outputOptions.dir!,
            file.fileName,
          ).replace(/\.map$/, '');
          const baseFileName = file.fileName.replace(
            /(\.cjs|\.css)(\.map)?$/,
            '',
          );
          const outputFilePath = resolve(outputOptions.dir!, baseFileName);
          // console.log(outputFilePath, 'minifying', file.fileName);
          if (isCSS) {
            await buildFile({
              input: inputFilePath,
              output: `${outputFilePath}.min.css`,
              minify: true,
              isCss: true,
              outDir,
            });
          } else {
            const umdDir = resolve(dirname(outputOptions.dir!), 'umd');
            if (!existsSync(umdDir)) {
              mkdirSync(umdDir);
            }
            const outUmd = `${outputFilePath}.umd.cjs`;
            await buildFile({
              name,
              input: inputFilePath,
              output: outUmd,
              minify: false,
              isCss: false,
              outDir,
            });
            // Workaround because jsDelivr does not use correct MIME types for .umd.cjs.
            // More info: https://github.com/jsdelivr/jsdelivr/issues/18584 https://github.com/rrweb-io/rrweb/pull/1704
            copyFileSync(outUmd, resolve(umdDir, `${baseFileName}.js`));
            const outUmdMin = `${outputFilePath}.umd.min.cjs`;
            await buildFile({
              name,
              input: inputFilePath,
              output: outUmdMin,
              minify: true,
              isCss: false,
              outDir,
            });
            copyFileSync(outUmdMin, resolve(umdDir, `${baseFileName}.min.js`));
          }
        }
      }
    },
  };
}