Error importing PrismaClient in code compiled from typescript :: export 'PrismaClient' not found

As you may know this issue was being worked on here.

In the mean time what you could do to proceed with your tests is to use dependency injection with a mocked prisma client and to move the deconstruction line

const { PrismaClient } = pkg;

to where your class or function uses it inside an if, i.e:

class MyClass {
  prisma: Prisma.PrismaClient

  def constructor(props) {
    if (!props?.prisma) {
      const { PrismaClient } = Prisma
      this.prisma = new PrismaClient({
        log: ['error']
      })
    } else {
      this.prisma = props.prisma
    }
  }
}

I know its not ideal but hopefully this does the trick.

to mock the PrismaClient you could mock it using jest-mock-extended like so

const mockPrisma = mockDeep<OriginalPrismaClient>();