next.config.mjs

/** @type {import('next').NextConfig} */
const nextConfig = {
  poweredByHeader: false,
  headers() {
    return [
      {
        source: "/:path*",
        // cpsはmiddlewareで設定する
        headers: [
          {
            key: "Cross-Origin-Opener-Policy",
            value: "same-origin",
          },
          {
            key: "Cross-Origin-Resource-Policy",
            value: "same-origin",
          },
          {
            key: "Cross-Origin-Embedder-Policy",
            value: "require-corp",
          },
          {
            key: "Origin-Agent-Cluster",
            value: "?1",
          },
          {
            key: "Referrer-Policy",
            value: "strict-origin-when-cross-origin",
          },
          {
            key: "Strict-Transport-Security",
            value: "max-age=63072000; includeSubDomains; preload",
          },
          {
            key: "X-Content-Type-Options",
            value: "nosniff",
          },
          {
            key: "X-DNS-Prefetch-Control",
            value: "off",
          },
          {
            key: "X-Frame-Options",
            value: "SAMEORIGIN",
          },
          // see: https://www.secure-iv.co.jp/techblog/7498
          // {
          //   key: "X-XSS-Protection",
          //   value: "0",
          // },
          {
            key: "Permissions-Policy",
            value:
              "camera=(), microphone=(), geolocation=(), interest-cohort=()",
          },
        ],
      },
    ];
  },
};

export default nextConfig;