Interactive Transaction not allowed by typescript

Bug description

The following (simple) usage of the interactive transaction (as documented here) produces a nasty typescript error that I can not seem to get around. (My actual transaction contains more logic but I was able to reproduce the error this way.)

const p: Paragraph = await prisma.$transaction(async (prisma) => {
  return prisma.paragraph.create({ data: data });
});

Argument of type '(prisma: any) => Promise<any>' is not assignable to parameter of type 'PrismaPromise<any>[]'.
  Type '(prisma: any) => Promise<any>' is missing the following properties from type 'PrismaPromise<any>[]': pop, push, concat, join, and 27 more.ts(2345)

It seems to expect the simpler $transaction API:

const [posts, totalPosts] = await prisma.$transaction([
  prisma.post.findMany({ where: { title: { contains: 'prisma' } } }),
  prisma.post.count(),
])

How to reproduce

Schema:

datasource db {
  provider = "postgresql"
  url      = env("DATABASE_URL")
}

generator client {
  provider        = "prisma-client-js"
  previewFeatures = ["referentialActions"]
}

model Paragraph {
  id      String @id @default(uuid())
  content String
}

Code:

const p: Paragraph = await prisma.$transaction(async (prisma) => {
  return prisma.paragraph.create({ data: data });
});

Expected behavior

Expected to behave as the interactive transaction documentation describes.

Prisma information

See ‘how to reproduce’.

Environment & setup

• OS: MacOS
• Database: PostgreSQL
• Node.js version: v16.4.2
• Typescript version: 4.3.5

Prisma Version

prisma               : 2.27.0
@prisma/client       : 2.27.0
Current platform     : darwin
Query Engine         : query-engine cdba6ec525e0213cce26f8e4bb23cf556d1479bb (at node_modules/@prisma/engines/query-engine-darwin)
Migration Engine     : migration-engine-cli cdba6ec525e0213cce26f8e4bb23cf556d1479bb (at node_modules/@prisma/engines/migration-engine-darwin)
Introspection Engine : introspection-core cdba6ec525e0213cce26f8e4bb23cf556d1479bb (at node_modules/@prisma/engines/introspection-engine-darwin)
Format Binary        : prisma-fmt cdba6ec525e0213cce26f8e4bb23cf556d1479bb (at node_modules/@prisma/engines/prisma-fmt-darwin)
Default Engines Hash : cdba6ec525e0213cce26f8e4bb23cf556d1479bb
Studio               : 0.410.0

[pantharshit00]

Good catch! Opened: https://github.com/prisma/docs/issues/2162

[ryands17]

You don’t have it added to the previewFeatures in your schema which is why it’s not working: https://github.com/prisma/prisma/releases/tag/2.29.0

It should work fine after running prisma generate.