NestJS AutoMapper not mapping automatically

[devskar]

Setup

So I have a pretty basic set up right now: I have a Community class and a GetCommunityDto. I am trying to map an object of type Community to an object of type GetCommunityDto before returning it from a controller. I created the mappings in the CommunityProfile and i load the profile in the Community Module.

Community

export enum CommunityPrivacy {
  PUBLIC = 'PUBLIC',
  PRIVATE = 'PRIVATE',
}

export class Community {

  @AutoMap()
  id: string;

  @AutoMap(() => [User])
  members: UserType[];

  @AutoMap(() => User)
  owner: UserType;

  @AutoMap()
  description: string;

  @AutoMap()
  privacy: CommunityPrivacy;

  @AutoMap()
  createdAt: Date;

  @AutoMap()
  updatedAt: Date;
}

GetCommunityDto

export class GetCommunityDto extends PickType(Community, [
  'id',
  'name',
  'description',
  'privacy',
  'createdAt',
  'updatedAt',
] as const) {}

Community Profile

@Injectable()
export class CommunityProfile extends AutomapperProfile {
  constructor(@Inject(getMapperToken()) mapper: Mapper) {
    super(mapper);
  }

  override get profile(): MappingProfile {
    return (mapper) => {
      createMap(mapper, Community, GetCommunityDto);
      createMap(mapper, Community, CreateCommunityDto);
      createMap(mapper, Community, UpdateCommunityDto);
    };
  }
}

Controller Method

  async findOne(
    @Param('id') id: string,
    @Req() req: UserRequest,
  ): Promise<GetCommunityDto | null> {
    const community: Community | null = await this.communityService.findOne(id);
    if (!community) {
      throw new NotFoundException();
    }

    if (community.isPrivate()) {
      if (community.isMember(req.user)) {
        return community;
      }
      throw new NotFoundException();
    }
    return this.mapper.map(community, Community, GetCommunityDto);
  }

Problem

With this set up the mapper returns an empty object and i am not sure why. If i explicitly tell the mapper what to do in the profile:
eg:

createMap(
  mapper,
  Community,
  GetCommunityDto,
  forMember(
    (d) => d.id,
    mapFrom((s) => s.id),
  ),
);

the mapper returns me an object with an id. This is not the expected behaviour as I understand. Shouldnt the mapper be able to automatically figure out that id belongs to id?

[devskar]

Okay i suppose this is related to #550 so i will close this for now