InferRawDocType returns unknown for every property instead of the right type

[watch-janick]

Prerequisites

• I have written a descriptive issue title

Mongoose version

8.4.x

Node.js version

20.x

MongoDB version

7.x

Operating system

macOS

Operating system version (i.e. 20.04, 11.3, 10)

12.7.x

Issue

Hello!

Following the documentation regarding InferRawDocType I'm facing a weird typing issue: every property of my schema is defined as unknown.

I'm using NestJS Mongoose Schema, could it be the problem?

My goal is to share the same type definition between my backend and frontend app.
I can't use the decorated class User on the frontend so I'm trying to get an inferred type that I can use on both.

Here's the code:

@Schema({ timestamps: true })
export class User {
  @Prop({ type: String, required: true })
  firstName: string

  @Prop({ required: true })
  lastName: string

  @Prop({ required: true })
  email: string

  @Prop({ enum: UserRoles, required: true })
  role: UserRoles

  @Prop({ type: [String], enum: Permissions, required: true })
  permissions: Permissions[]

  @Prop({ type: Date })
  lastLoginAt?: Date

  @Prop({ type: Boolean, default: true })
  isActive?: boolean
}

export type UserDocument = HydratedDocument<User>
export const UserSchema = SchemaFactory.createForClass(User)
export type UserType = InferRawDocType<User>

Here's what UserType gives:

Any idea as to why the properties aren't typed correctly?

Thanks!

[vkarpov15]

InferRawDocType converts a Mongoose schema definition into a TypeScript type, so { firstName: { type: String, required: true } } to { firstName: string }. However, with NestJS, you're starting with the TypeScript type and deriving a schema from that, so I don't think you even need InferRawDocType.

We did some work to get InferRawDocType to handle User correctly, but it looks like the correct output for InferRawDocType<User> is just User anyway. Is there a reason why you don't just do export type UserType = User or something similar?

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[github-actions]

This issue was closed because it has been inactive for 19 days and has been marked as stale.