prisma.ts und vile.config

src/lib/server/prisma.ts

@@ -0,0 +1,16 @@
+// src/lib/server/prisma.ts
+import { PrismaClient } from '@prisma/client';
+
+const globalForPrisma = globalThis as unknown as {
+  prisma: PrismaClient | undefined;
+};
+
+export const prisma =
+  globalForPrisma.prisma ??
+  new PrismaClient({
+    log: ['error', 'warn'],
+  });
+
+if (process.env.NODE_ENV !== 'production') {
+  globalForPrisma.prisma = prisma;
+}

vite.config.ts

@@ -3,10 +3,10 @@ import { defineConfig } from 'vite';
 
 export default defineConfig({
   plugins: [sveltekit()],
+  ssr: {
+    noExternal: ['@prisma/client']
+  },
   optimizeDeps: {
     exclude: ['@prisma/client']
-  },
-  ssr: {
-    noExternal: process.env.NODE_ENV === 'production' ? ['@prisma/client'] : [],
   }
 });