next.config.js

/** @type {import('next').NextConfig} */
const nextConfig = {
  experimental: {
    appDir: true,
  },
  async headers() {
    return [
      {
        source: '/(.*)',
        headers: [
          {
            key: 'X-Frame-Options',
            value: 'SAMEORIGIN',
          },
          {
            key: 'X-XSS-Protection',
            value: '1; mode=block',
          },
          {
            key: 'X-Content-Type-Options',
            value: 'nosniff',
          },
          {
            key: 'Referrer-Policy',
            value: 'same-origin',
          },
          {
            key: 'X-Permitted-Cross-Domain-Policies',
            value: 'none',
          },
          {
            key: 'X-DNS-Prefetch-Control',
            value: 'off',
          },
        ],
      },
    ]
  },
}

module.exports = nextConfig