Fix(crud-response-interceptor): classToPlain call two times

[strelov1]

#525

@Transform in DTO called two times, this occurring only with alwaysPaginate set true

@Transform((value, obj) => obj.F2 + ':' + obj.F2)

DATA:
{ "F1":1, "F2":"YaEvwfvzVi" }

Server response:
{ "data":[ { "F1":1, "F2":"YaEvwfvzVi:1:1" } ], "count":1, "total":1000, "page":1, "pageCount":1000 }

test_controller.ts

@Crud({
  model: {
    type: TestDataDto
  },
  query: {
    alwaysPaginate: true,
  }
})
@Controller('test')
export class TestController implements CrudController<TestData>{
  constructor(public service: TestService){}
}

test_service.ts

@Injectable()
export class TestService extends TypeOrmCrudService<TestData>{
  constructor(@InjectRepository(TestData) usersRepository: Repository<TestData>){
    super(usersRepository);
  }
}

test_entity.ts

@Entity({ name: 'TEST_DATA' })
export class TestData {
  @PrimaryColumn()
  public F1: number;

  @Column()
  public F2: string;
}

test_dto.ts

@Exclude()
export class TestDataDto {
  @Expose()
  public F1: string;

  @Expose()
  @Transform((value, obj) => obj.F2 + ':' + obj.F1)
  public F2: string;
}

[AliYusuf95]

This is a possible fix for #438

[rewiko]

I am trying to help and have forked this repo (can't reach the owner of this repo and do not have the credential for the npm repo).

See #710 (comment)

We can hopefully merge it via rewiko#5