middleware.ts

import { NextResponse } from "next/server";
import type { NextRequest } from "next/server";

export function middleware(request: NextRequest) {
  const response = NextResponse.next();

  // Security headers
  response.headers.set("X-Frame-Options", "DENY");
  response.headers.set("X-Content-Type-Options", "nosniff");
  response.headers.set("Referrer-Policy", "strict-origin-when-cross-origin");
  response.headers.set("X-DNS-Prefetch-Control", "on");
  response.headers.set(
    "Permissions-Policy",
    "camera=(), microphone=(), geolocation=()"
  );
  response.headers.set(
    "Strict-Transport-Security",
    "max-age=63072000; includeSubDomains; preload"
  );

  return response;
}

export const config = {
  matcher: [
    /*
     * Match all request paths except:
     * - _next/static (static files)
     * - _next/image (image optimization files)
     * - favicon.ico (favicon file)
     * - public files (images, etc.)
     */
    "/((?!_next/static|_next/image|favicon.ico|.*\\.(?:svg|png|jpg|jpeg|gif|webp|ico)$).*)",
  ],
};