Fix Vercel ES module import issues

- Change JSON import to use require() to avoid module loading issues
- Add api/tsconfig.json with CommonJS module configuration
- Update Vercel Node.js runtime to @vercel/node@3.2.0
- Add buildCommand to vercel.json for proper compilation
- Fix 'Cannot use import statement outside a module' error

api/migrate.ts

@@ -1,6 +1,8 @@
 import { NextRequest, NextResponse } from 'next/server';
 import { Pool } from 'pg';
-import cardsData from '../src/data/cards.json';
+
+// Use require for JSON import to avoid module issues
+const cardsData = require('../src/data/cards.json');
 
 // Create PostgreSQL connection pool
 const pool = new Pool({

api/tsconfig.json

@@ -0,0 +1,22 @@
+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "module": "CommonJS",
+    "moduleResolution": "node",
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "strict": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true,
+    "resolveJsonModule": true,
+    "declaration": false,
+    "outDir": "./dist"
+  },
+  "include": [
+    "**/*.ts"
+  ],
+  "exclude": [
+    "node_modules",
+    "dist"
+  ]
+} 

vercel.json

@@ -52,7 +52,8 @@
   ],
   "functions": {
     "api/**/*.ts": {
-      "runtime": "@vercel/node@3.0.7"
+      "runtime": "@vercel/node@3.2.0"
     }
-  }
+  },
+  "buildCommand": "npm run build"
 }