Set new caching rules (#542)

next.config.js

@@ -1,7 +1,6 @@
 /** @type {import('next').NextConfig} */
 
 const nextConfig = {
-  productionBrowserSourceMaps: true,
   reactStrictMode: true,
   images: {
     domains: [
@@ -26,6 +25,31 @@ const nextConfig = {
       },
     ]
   },
+  async headers() {
+    return [
+      {
+        source: '/(.*)?',
+        headers: [
+          {
+            key: 'Referrer-Policy',
+            value: 'origin-when-cross-origin',
+          },
+          {
+            key: 'Pragma',
+            value: 'no-cache',
+          },
+          {
+            key: 'Expires',
+            value: new Date().toString(),
+          },
+          {
+            key: 'X-Content-Type-Options',
+            value: 'nosniff',
+          },
+        ],
+      },
+    ]
+  },
   async rewrites() {
     return [
       {