Duplicate identifier in generated types

[itsgiacoliketaco]

Bug description

Given the following schema, Prisma 4.8 will generate two different type MemberRoleArgs lines in .prisma/client/index.d.ts. The first MemberRoleArgs type corresponds with the MemberRole model. The second type corresponds with the Member.role field.

model Member {
  id String @id
  role MemberRole? @relation(fields: [roleId], references: [id])
  roleId String?
}

model MemberRole {
  id String @id
  members Member[]
}

This issue is new as of Prisma 4.8.0; it does not affect 4.7.0 or below.

How to reproduce

1. Use the above prisma schema.
2. Run prisma generate
3. Run tsc --noEmit
4. See TypeScript error:

   error TS2300: Duplicate identifier 'MemberRoleArgs'
   

Expected behavior

Prisma always generates unique identifiers for helper types.

Perhaps the type for Member.role could be named Member_RoleArgs instead!

Prisma information

Minimal Prisma schema to produce this error is given above.

Environment & setup

• OS: macOS
• Database: PostgreSQL
• Node.js version: 16.15.1

Prisma Version

4.8.0

[jkomyno]

Hi @itsgiacoliketaco, closing this is as a duplicate of #17005. This was indeed a regression introduced in prisma@4.8.0 that should be fixed by the next release

[itsgiacoliketaco]

Great news, thank you!