next.config.mjs

import { withSentryConfig } from "@sentry/nextjs";
import bundleAnalyzer from "@next/bundle-analyzer";

const withBundleAnalyzer = bundleAnalyzer({
  enabled: process.env.ANALYZE === "true",
});

/** @type {import('next').NextConfig} */
const nextConfig = {
  // Enable standalone output for Docker deployment
  output: "standalone",

  // Enable gzip compression for responses (enabled by default, explicit for clarity)
  compress: true,

  async headers() {
    // Security headers applied to every route.
    // The HSTS header is only included when NOT running on localhost (checked
    // at build/startup time via NODE_ENV / VERCEL_URL).
    const isLocal =
      !process.env.VERCEL_URL && process.env.NODE_ENV !== "production";

    /** @type {import('next').Header["headers"]} */
    const securityHeaders = [
      { key: "X-Content-Type-Options", value: "nosniff" },
      { key: "X-Frame-Options", value: "DENY" },
      { key: "X-XSS-Protection", value: "1; mode=block" },
      { key: "Referrer-Policy", value: "strict-origin-when-cross-origin" },
      {
        key: "Permissions-Policy",
        value: "camera=(), microphone=(), geolocation=()",
      },
      {
        key: "Content-Security-Policy",
        value: [
          "default-src 'self'",
          `script-src 'self' 'unsafe-inline' https://analytics.711x.de${isLocal ? " 'unsafe-eval'" : ""}`,
          "style-src 'self' 'unsafe-inline'",
          "img-src 'self' data: blob: https:",
          "font-src 'self' data:",
          "connect-src 'self' https://*.sentry.io https://*.stripe.com https://*.basemaps.cartocdn.com https://*.cartocdn.com https://nominatim.openstreetmap.org https://analytics.711x.de https://127.0.0.1:41951",
          "worker-src 'self' blob:",
          "frame-src 'self' https://*.stripe.com",
          "object-src 'none'",
          "base-uri 'self'",
          "form-action 'self'",
          "frame-ancestors 'none'",
        ].join("; "),
      },
    ];

    if (!isLocal) {
      securityHeaders.push({
        key: "Strict-Transport-Security",
        value: "max-age=31536000; includeSubDomains",
      });
    }

    return [
      {
        // Apply to all routes
        source: "/(.*)",
        headers: securityHeaders,
      },
    ];
  },
};

export default withBundleAnalyzer(withSentryConfig(nextConfig, {
  // For all available options, see:
  // https://www.npmjs.com/package/@sentry/webpack-plugin#options

  org: process.env.SENTRY_ORG,

  project: process.env.SENTRY_PROJECT,

  url: process.env.SENTRY_URL,

  // Only print logs for uploading source maps in CI
  silent: !process.env.CI,

  // For all available options, see:
  // https://docs.sentry.io/platforms/javascript/guides/nextjs/manual-setup/

  // GlitchTip does not support sentry-cli source map uploads
  sourcemaps: {
    disable: true,
  },

  // Route browser requests to Sentry through a Next.js rewrite to circumvent ad-blockers.
  // This can increase your server load as well as your hosting bill.
  // Note: Check that the configured route will not match with your Next.js middleware, otherwise reporting of client-
  // side errors will fail.
  tunnelRoute: "/monitoring",

  webpack: {
    // Enables automatic instrumentation of Vercel Cron Monitors. (Does not yet work with App Router route handlers.)
    // See the following for more information:
    // https://docs.sentry.io/product/crons/
    // https://vercel.com/docs/cron-jobs
    automaticVercelMonitors: true,

    // Tree-shaking options for reducing bundle size
    treeshake: {
      // Automatically tree-shake Sentry logger statements to reduce bundle size
      removeDebugLogging: true,
    },
  },
}));