Fix Vercel deployment issues

- Update Node.js version from 18.x to 22.x for Neon compatibility
- Fix TypeScript errors by properly typing error objects as Error
- Resolve engine compatibility issues with @neondatabase/serverless and react-router
- Add proper error type casting in all API endpoints
- Fix FUNCTION_INVOCATION_FAILED crashes

api/migrate.ts

@@ -118,7 +118,7 @@ export default async function handler(req: NextRequest) {
         `;
         migratedCount++;
       } catch (error) {
-        const errorMsg = `Error migrating card ${card.name}: ${error.message}`;
+        const errorMsg = `Error migrating card ${card.name}: ${(error as Error).message}`;
         console.error(errorMsg);
         errors.push(errorMsg);
       }
@@ -146,7 +146,7 @@ export default async function handler(req: NextRequest) {
     return new NextResponse(JSON.stringify({ 
       success: false,
       error: 'Migration failed',
-      details: error.message
+      details: (error as Error).message
     }), {
       status: 500,
       headers: { 'Content-Type': 'application/json' },

api/v1/cards/[id].ts

@@ -102,7 +102,7 @@ export default async function handler(req: NextRequest) {
     console.error('API Error:', error)
     return new NextResponse(JSON.stringify({ 
       error: 'Internal server error',
-      details: process.env.NODE_ENV === 'development' ? error.message : undefined
+      details: process.env.NODE_ENV === 'development' ? (error as Error).message : undefined
     }), {
       status: 500,
       headers: {

api/v1/cards/index.ts

@@ -110,7 +110,7 @@ export default async function handler(req: NextRequest) {
     console.error('API Error:', error)
     return new NextResponse(JSON.stringify({ 
       error: 'Internal server error',
-      details: process.env.NODE_ENV === 'development' ? error.message : undefined
+      details: process.env.NODE_ENV === 'development' ? (error as Error).message : undefined
     }), {
       status: 500,
       headers: {

package-lock.json

@@ -38,7 +38,7 @@
         "tailwindcss": "^3.4.17"
       },
       "engines": {
-        "node": "18.x"
+        "node": "22.x"
       }
     },
     "node_modules/@adobe/css-tools": {

package.json

@@ -3,7 +3,7 @@
   "version": "0.1.0",
   "private": true,
   "engines": {
-    "node": "18.x"
+    "node": "22.x"
   },
   "dependencies": {
     "@neondatabase/serverless": "^1.0.1",