import type { NextConfig } from "next";

const subDomain =
  process.env.NEXT_PUBLIC_SUB_DOMAIN || "http://localhost:13000";

const nextConfig: NextConfig = {
  output: 'standalone', // docker image shrink
  compress: true, // 기본값 true지만 명시 web browser request zip format
  async rewrites() {
    return [
      {
        source: '/_next/static/:path*.js',
        destination: '/_next/static/:path*.js.gz',
        has: [
          {
            type: 'header',
            key: 'accept-encoding',
            value: '.*gzip.*',
          },
        ],
      },
    ]
  },
  async headers() {
    return [
      {
        source: '/_next/static/:path*.js.gz',
        headers: [
          { key: 'Content-Encoding', value: 'gzip' },
          { key: 'Content-Type', value: 'application/javascript' },
          { key: 'Vary', value: 'Accept-Encoding' },
        ],
      },
    ]
  },
};

export default nextConfig;