next.config.mjs

import { dirname } from 'node:path';
import { fileURLToPath } from 'node:url';

const projectRoot = dirname(fileURLToPath(import.meta.url));

/** @type {import('next').NextConfig} */
const nextConfig = {
  output: 'standalone',
  outputFileTracingRoot: projectRoot,
  turbopack: {
    root: projectRoot,
  },

  serverExternalPackages: ['mysql2'],

  // Give builds migrated from the retired custom JSX runtime a fresh compiler
  // cache namespace without disabling persistent caching.
  compiler: {
    reactRemoveProperties: false,
  },

  // Disable x-powered-by header
  poweredByHeader: false,

  // Security headers
  async headers() {
    return [
      {
        source: '/:path*',
        headers: [
          { key: 'X-DNS-Prefetch-Control', value: 'off' },
          { key: 'X-Content-Type-Options', value: 'nosniff' },
          { key: 'X-Frame-Options', value: 'SAMEORIGIN' },
          { key: 'X-XSS-Protection', value: '0' },
          { key: 'Referrer-Policy', value: 'strict-origin-when-cross-origin' },
          { key: 'Permissions-Policy', value: 'camera=(), microphone=(), geolocation=(), payment=()' },
          { key: 'Cross-Origin-Opener-Policy', value: 'same-origin' },
          { key: 'Cross-Origin-Resource-Policy', value: 'same-site' },
        ],
      },
    ];
  },
};

export default nextConfig;