Class 'CreateUserDto' incorrectly extends base class 'RemoveFieldsWithType<Partial<User>, Function>'. Property 'status' is optional in type 'CreateUserDto' but required in type 'RemoveFieldsWithType<Partial<User>, Function>'

[praveendodda07]

Is there an existing issue for this?

• I have searched the existing issues

Current behavior

In version 2.0.0 we are getting this error. user Partial

Minimum reproduction code

https://github.com/nestjs/mapped-types

Steps to reproduce

install @nestjs/mapped-types with 2.0.0 version
User "Partial" method from it.
Getting the error like: Class 'CreateUserDto' incorrectly extends base class 'RemoveFieldsWithType<Partial, Function>'.
Property 'status' is optional in type 'CreateUserDto' but required in type 'RemoveFieldsWithType<Partial, Function>'.

Expected behavior

This error should not come.

Package version

2.0.0

Node.js version

14.21.3

In which operating systems have you tested?

• macOS
• Windows
• Linux

Other

No response

[kamilmysliwiec]

Please provide a minimum reproduction repository (Git repository/StackBlitz/CodeSandbox project).

[huthaifaa]

Getting the same error after upgrading to Nest10 today. Amazing work on the release, great job!
Made a small workaround by using the working version of partialtype.helper in version 1.2.

I believe it should be an easy fix from the team. Looking forward to it.

The error is caused when using a partial type, and says that the rest of the data is required, although it's a partial type.

[micalevisk]

I believe it should be an easy fix from the team

it could be if someone provide us some code or the steps to create a repro of such issue, at least 😸

[huthaifaa]

import { PartialType } from '@nestjs/mapped-types';
import {
  IsBoolean,
  IsEmpty,
  IsOptional,
  IsString,
} from 'class-validator';

export class SpCreateSpecializationDto {
  @IsString()
  name: string;

  @IsString()
  description?: string;


  @IsOptional()
  @IsBoolean()
  isPublished?: boolean;
}

export class SpUpdateSpecializationDto extends PartialType(
  SpCreateSpecializationDto,
) {
  @IsEmpty()
  isPublished?: boolean;

}

I found it can be fixed by using omit, like this:

export class SpUpdateSpecializationDto extends PartialType(
  OmitType(SpCreateSpecializationDto, ['isPublished'] as const),
) {
  @IsEmpty()
  isPublished?: undefined;
}

This removes the error of:
Class 'SpUpdateSpecializationDto' incorrectly extends base class 'RemoveFieldsWithType<Partial<SpCreateSpecializationDto>, Function>'. Property 'courseIds' is optional in type 'SpUpdateSpecializationDto' but required in type 'RemoveFieldsWithType<Partial<SpCreateSpecializationDto>, Function>'.

I hope this is helpful.

[kamilmysliwiec]

Fixed in v2.0.1

[huthaifaa]

Fixed in v2.0.1

Thank you so much, really a big fan of your work! LEGAND