praktikum refinemend Plaetze pro Dienstelle und Pro Zeitraum

src/lib/prisma.ts

@@ -0,0 +1,15 @@
+import { PrismaClient } from '@prisma/client';
+
+const globalForPrisma = globalThis as unknown as {
+  prisma: PrismaClient | undefined;
+};
+
+export const prisma =
+  globalForPrisma.prisma ??
+  new PrismaClient({
+    log: process.env.NODE_ENV !== 'production' ? ['query', 'error', 'warn'] : ['error'],
+  });
+
+if (process.env.NODE_ENV !== 'production') {
+  globalForPrisma.prisma = prisma;
+}