error TS2694: Namespace '".../node_modules/.prisma/client/index"' has no exported member 'BatchPayload'

Bug description

When I use deleteMany, updateMany. Prisma support type named BatchPayload but it has no exported.

How to reproduce

1. Make any model, suppose model Alarms
2. CRUD model in @nexus/schema, t.crud.deleteManyAlarm();
3. tsc --noEmit or tsc
4. @nexus/schema generated types
5. Type Error in BatchPayload: PrismaClient.BatchPayload;
6. generated PrismaClient has

  /**
   * Batch Payload for updateMany & deleteMany
   */

  export type BatchPayload = {
    count: number
  }

1. However, I can’t import that.

Expected behavior

import * as PrismaClient from ".prisma/client"

no error Type namespace with PrismaClient.BatchPayload

Prisma information

model Alarm {
  id                Int            @id @default(autoincrement())
  createdAt         DateTime       @default(now())
  updatedAt         DateTime       @updatedAt
  title             String
  contents          String
  important         Boolean        @default(false)
  read              Boolean
  alarmType         AlarmType      @default(ADVERTISEMENT)
  advertisementBy   Advertisement? @relation(fields: [advertisementById], references: [id])
  advertisementById Int?
  notificationBy    Notification?  @relation(fields: [notificationById], references: [id])
  notificationById  Int?
  userBy            User?          @relation(fields: [userById], references: [id])
  userById          Int?
}

Environment & setup

• OS: Mac OS
• Database: MySQL
• Node.js version: 12.14.0
• Prisma version: 2.12.1
• @nexus/schema: 0.19.2
• nexus-plugin-prisma: 0.25.0

[MaxPiccinno]

Sorry for necro-posting, I had the same issue and this was the first thread came from google search.

I solved it as follow: import { Prisma } from '@prisma/client'

then you can reference it as Prisma.BatchPayload.

Problem solved

[eunchurnpark]

I found problem in generated type in @nexus/schema

--- src/generated/resolverTypes.ts	2020-11-30 12:32:48.000000000 +0900
+++ src/generated/resolverTypes-gen.ts	2020-11-30 12:34:45.000000000 +0900
@@ -23445,7 +23445,7 @@
     user?: NexusGenRootTypes['User'] | null; // User
   }
   Bank: PrismaClient.Bank;
-  BatchPayload: PrismaClient.BatchPayload;
+  BatchPayload: PrismaClient.Prisma.BatchPayload;
   BestBrandGroupStatBoard: PrismaClient.BestBrandGroupStatBoard;
   BestBrandStatBoard: PrismaClient.BestBrandStatBoard;
   Brand: PrismaClient.Brand;
@@ -29340,4 +29340,4 @@
      */
     required?: boolean
   }
-}
\ No newline at end of file
+}