import type { NextConfig } from "next";

const nextConfig: NextConfig = {
  output: "standalone",
  async headers() {
    return [
      {
        // Browsers are supposed to bypass HTTP cache when checking for a new
        // service worker, but that's not reliably honored everywhere - an
        // explicit no-cache header here is the only way to guarantee a sw.js
        // fix actually reaches already-open tabs promptly after a deploy,
        // instead of possibly sitting cached for hours.
        source: "/sw.js",
        headers: [{ key: "Cache-Control", value: "no-cache, no-store, must-revalidate" }],
      },
    ];
  },
};

export default nextConfig;