build.ts

   return {
        plugins: [
          ignorePlugin({ ignore: ['server'] }),
          cssPlugin({
            excludeCSSInject: true,
            onCSSGenerated: args.onCSSGenerated,
          }),
          pnpPlugin(),
        ],
        bundle: true,
        external: [
          'aws-sdk', // included in Lambda runtime environment
        ],
        minify: true,
        platform: 'node',
        format: 'cjs',
        target: 'node16.0',
        treeShaking: true,
        define: {
          'process.env.NODE_ENV': '"production"',
        }, // see https://github.com/evanw/esbuild/issues/2377
        sourcemap: true,
        metafile: false,
    };