First version

src/lib/prisma.ts

@@ -0,0 +1,17 @@
+import { PrismaClient } from '@prisma/client'
+
+let prisma: PrismaClient
+
+export function getPrisma() {
+  if (!prisma) {
+    if (process.env.NODE_ENV === 'production') {
+      prisma = new PrismaClient()
+    } else {
+      if (!(global as any).prisma) {
+        ;(global as any).prisma = new PrismaClient()
+      }
+      prisma = (global as any).prisma
+    }
+  }
+  return prisma
+}