Prisma models made up of only relations breaks prisma generator

[Atlinx]

Describe the Bug
If you declare in a schema.prisma file models that only contain relations and an id, the type-graphql prisma generator will fail.

To Reproduce

1. Use this schema.prisma

generator client {
  provider = "prisma-client-js"
}

generator typegraphql {
  provider = "typegraphql-prisma"
}

datasource db {
  provider = "mongodb"
  url      = env("DB_URL")
}

model User {
  id              String              @id @default(auto()) @map("_id") @db.ObjectId
  email           String              
  roles           UserRole[]
}

model UserRole {
  id       String       @id @default(auto()) @map("_id") @db.ObjectId
  test     String
  type     UserRoleType @relation(fields: [typeId], references: [id])
  typeId   String
  member   User         @relation(fields: [memberId], references: [id])
  memberId String
}

model UserRoleType {
  id          String     @id @default(auto()) @map("_id") @db.ObjectId
  name        String     @unique
  roles       UserRole[]
  permissions String[]

2. Have everything else configured correctly for prisma generation. ( )
3. Run npx prisma generate
4. See this error

Error: Some errors occurred while generating GraphQL Schema:
Input Object type UserRoleUpdateManyMutationInput must define one or more fields.

Expected Behavior
The type-graphql prisma generator should work successfully with no errors.

Environment (please complete the following information):

• OS: Windows
• Node: v17.6.0
• Package version: v1.1.1
• TypeScript version v4.6.4

[MichalLytek]

Duplicate of #19 🔒