diff --git a/packages/app-next-js/next.config.mjs b/packages/app-next-js/next.config.mjs
index 841e57a..1d61478 100644
--- a/packages/app-next-js/next.config.mjs
+++ b/packages/app-next-js/next.config.mjs
@@ -1,8 +1,4 @@
 /** @type {import('next').NextConfig} */
-const nextConfig = {
-  typescript: {
-    ignoreBuildErrors: true,
-  },
-}
+const nextConfig = {}
 
 export default nextConfig
diff --git a/packages/app-next-js/package.json b/packages/app-next-js/package.json
index 104c7e1..a16dfaf 100644
--- a/packages/app-next-js/package.json
+++ b/packages/app-next-js/package.json
@@ -6,7 +6,8 @@
   "scripts": {
     "dev": "next dev",
     "build": "next build",
-    "start": "next start"
+    "start": "next start",
+    "type-check": "tsc --noEmit"
   },
   "dependencies": {
     "next": "16.1.1",
@@ -16,6 +17,7 @@
   "devDependencies": {
     "@types/node": "25.0.3",
     "@types/react": "19",
-    "@types/react-dom": "19"
+    "@types/react-dom": "19",
+    "typescript": "^5.9.3"
   }
 }
diff --git a/packages/app-next-js/pnpm-lock.yaml b/packages/app-next-js/pnpm-lock.yaml
index 4576ebb..7ad8b44 100644
--- a/packages/app-next-js/pnpm-lock.yaml
+++ b/packages/app-next-js/pnpm-lock.yaml
@@ -27,6 +27,9 @@ importers:
       '@types/react-dom':
         specifier: '19'
         version: 19.2.3(@types/react@19.2.14)
+      typescript:
+        specifier: ^5.9.3
+        version: 5.9.3
 
 packages:
 
@@ -326,6 +329,11 @@ packages:
   tslib@2.8.1:
     resolution: {integrity: sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==}
 
+  typescript@5.9.3:
+    resolution: {integrity: sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==}
+    engines: {node: '>=14.17'}
+    hasBin: true
+
   undici-types@7.16.0:
     resolution: {integrity: sha512-Zz+aZWSj8LE6zoxD+xrjh4VfkIG8Ya6LvYkZqtUQGJPZjYl53ypCaUwWqo7eI0x66KBGeRo+mlBEkMSeSZ38Nw==}
 
@@ -573,4 +581,6 @@ snapshots:
 
   tslib@2.8.1: {}
 
+  typescript@5.9.3: {}
+
   undici-types@7.16.0: {}