src/lib/prisma.ts

import { PrismaClient } from '@prisma/client'

const globalForPrisma = global as unknown as { prisma: PrismaClient }

export const prisma =
  globalForPrisma.prisma ??
  new PrismaClient({ log: ['error'] })

if (process.env.NODE_ENV !== 'production') globalForPrisma.prisma = prisma