refactor : 미들웨어 추가

next.config.mjs

@@ -2,16 +2,6 @@
 import withPWA from 'next-pwa';
 
 const nextConfig = {
-  async redirects() {
-    return [
-      {
-        source: '/',
-        destination: '/sign',
-        permanent: true // true로 설정하면 308 리다이렉션, false로 설정하면 307 리다이렉션
-      }
-    ];
-  },
-
   images: {
     domains: [
       'bzbz-file-bucket.s3.ap-northeast-2.amazonaws.com',
@@ -32,6 +22,23 @@ const nextConfig = {
         config.resolve.alias.push({ name: 'msw/node', alias: false });
       else config.resolve.alias['msw/node'] = false;
     }
+
+    if (!isServer) {
+      // splitChunks가 객체인지 확인하고, 필요하다면 초기화
+      if (
+        !config.optimization.splitChunks ||
+        typeof config.optimization.splitChunks !== 'object'
+      ) {
+        config.optimization.splitChunks = { cacheGroups: {} };
+      }
+
+      config.optimization.splitChunks.cacheGroups.commons = {
+        test: /[\\/]node_modules[\\/]/,
+        name: 'vendors',
+        chunks: 'all'
+      };
+    }
+
     return config;
   },
   pwa: withPWA({

src/middleware.ts

@@ -0,0 +1,33 @@
+import { NextResponse } from 'next/server';
+import type { NextRequest } from 'next/server';
+
+export function middleware(request: NextRequest) {
+  const token = request.cookies.get('token');
+  const pathname = request.nextUrl.pathname;
+
+  // API 라우트나 정적 파일, 특정 정적 자원에 대한 요청을 건너뛰고, 페이지 요청에만 미들웨어를 적용합니다.
+  if (
+    pathname.startsWith('/api') ||
+    pathname.includes('.') ||
+    pathname.startsWith('/_next/static/') ||
+    pathname.startsWith('/favicon') ||
+    pathname === '/manifest.json' ||
+    pathname === '/firebase-messaging-sw.js' ||
+    pathname.startsWith('/icons/')
+  ) {
+    return NextResponse.next();
+  }
+  console.log('middleware', token, pathname);
+
+  if (
+    !token &&
+    pathname !== '/sign' &&
+    pathname !== '/signin' &&
+    pathname !== '/signup' &&
+    pathname !== '/sign/findpassword'
+  ) {
+    return NextResponse.redirect(new URL('/sign', request.url));
+  }
+
+  return NextResponse.next();
+}