next.config.js

/** @type {import('next').NextConfig} */
const nextConfig = {
  reactStrictMode: true,
  async headers() {
    return [
      {
        source: '/(.*)',
        headers: [
          { key: 'X-Frame-Options', value: 'DENY' },
          { key: 'X-Content-Type-Options', value: 'nosniff' },
          { key: 'Referrer-Policy', value: 'no-referrer-when-downgrade' },
          { key: 'Permissions-Policy', value: 'geolocation=(), microphone=()' },
          { key: 'Strict-Transport-Security', value: 'max-age=63072000; includeSubDomains; preload' },
          {
            key: 'Content-Security-Policy',
            value: "default-src 'self'; script-src 'self' 'unsafe-inline' https:; style-src 'self' 'unsafe-inline' https:; img-src 'self' data:; connect-src 'self' https: wss:; font-src 'self' data:;",
          },
        ],
      },
    ];
  },
};

module.exports = nextConfig;