_count not working with typescript

Bug description

The new introduced _count property does not work with the generated Typescript

How to reproduce

This is a portion of the schema:

model Contratto {
    id Int @id @default(autoincrement()) @map("id")

    dataInizio DateTime @map("data_inizio")
    dataFine   DateTime @map("data_fine")

    dataFirmaContratto     DateTime? @map("data_firma_contratto")
    dataChiusuraAnticipata DateTime? @map("data_chiusura_anticipata")

    checkout Float?   @map("checkout")
    cauzione Float?   @map("cauzione")
    tipoRata TipoRata @map("tipo_rata")

    idTariffa Int     @map("id_tariffa")
    tariffa   Tariffa @relation(fields: [idTariffa], references: [id])

    idTipoContratto Int           @map("id_tipo_contratto")
    tipoContratto   TipoContratto @relation(fields: [idTipoContratto], references: [id])

    idQuietanziante Int           @map("id_quietanziante")
    quietanziante   Quietanziante @relation(fields: [idQuietanziante], references: [id])

    note String? @map("note")

    contrattiSuOspite ContrattoSuOspite[]

    bollette Bolletta[]
    @@map("contratto")
}

This is what I have if I want to get the number of “bollette” of a contract:

Expected behavior

I would expect to be able to use it, if _count is actually what I think it is.

Environment & setup

• OS:Ubuntu 20
• Database: Postgres
• Node.js version: 15
• Prisma version: 2.21.2

[gmanno]

Works for me too. Thanks for the support.

[euberdeveloper]

I did not add selectRelationCount, thanks