ERROR [ExceptionsHandler] You need to use @UseDto on class (ClassNameEntity) be able to call toDto function

[tinnt-uranus]

// use-dto.decorator.ts

import { type Constructor } from '../types';

export function UseDto(dtoClass: Constructor): ClassDecorator {
  return (ctor) => {
    // FIXME make dtoClass function returning dto

    if (!(<unknown>dtoClass)) {
      throw new Error('UseDto decorator requires dtoClass');
    }

    // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
    ctor.prototype.dtoClass = dtoClass;
  };
}

The ctor.prototype.dtoClass always undefined.

[KoudouMax]

use Reflect metadata.
// use-dto-decorator.ts
export const DTO_KEY = Symbol('DTO_KEY');

export function UseDto(dto: Constructor): ClassDecorator {
// eslint-disable-next-line @typescript-eslint/ban-types
return (target: Function) => {
Reflect.defineMetadata(DTO_KEY, dto, target);
};
}

//abtract.entity.ts
toDto(options?: O): DTO {
const DtoClass = Reflect.getMetadata(DTO_KEY, this.constructor);

if (!DtoClass) {
  throw new Error(
    `You need to use @UseDto on class (${this.constructor.name}) be able to call toDto function`,
  );
}

return new DtoClass(this, options);

}

[tuancao-mti]

Actual, we don't need to define private dtoClass?: Constructor<DTO, [AbstractEntity, O?]>; in abstract.entity.ts. Just remove it and make a change in toDto method.

toDto(options?: O): DTO
{

const dtoClass = Object.getPrototypeOf(this).dtoClass;

if (!dtoClass) {
  throw new Error(
    `You need to use @UseDto on class (${this.constructor.name}) be able to call toDto function`,
  );
}

return new dtoClass(this, options);

}