Error while trying to when using fromMember

[isaacguerreir]

I don't think this is a bug, it's actually because I don't understand some underlying structure of the automapper.

 mapper.createMap(HostInstitutionAdmin, HostInstitutionAdminOutputDto)
 .forMember((destination) => destination.account, mapFrom((source) => source.accountUsername))     

and I'm getting this error:

backend_test_1  |     TypeError: Cannot read property '2' of undefined                                                                                                                                                                       backend_test_1  |                                                                                                                                                                                                                            backend_test_1  |       at createMapForMember (packages/core/src/lib/create-mapper/create-map-for-member.util.ts:69:28)                                                                                                                      backend_test_1  |       at Object.forMember (packages/core/src/lib/create-mapper/create-map-fluent-function.util.ts:34:25)                                                                                                                   backend_test_1  |       at src/modules/host-institutions/host-institutions.profile.ts:21:16                                                                                                                                                  backend_test_1  |       at Object.addProfile (packages/core/src/lib/create-mapper/create-mapper.ts:79:7)                                                                                                                                     backend_test_1  |       at packages/nestjs/src/lib/abstracts/automapper-profile.abstract.ts:8:46                                                                                                                                             backend_test_1  |           at runMicrotasks (<anonymous>)    

What is property '2' in forMember? Source?

[micalevisk]

how are you calling the map operation?

[nartc]

@micalevisk thank you for responding.

According to the stack trace, this isn't even map operation yet. Can you show me how you're setting up your Profile? Also where you're using the Profile?

property "2" is mapping[MappingClassId.properties]. The error is saying mapping is undefined which shouldn't be the case if set up correctly. When calling createMap(), the mapping should have been created before forMember() is called.

[isaacguerreir]

@Injectable()                                                                                                                                                                                                                            export class HostInstitutionsProfile extends AutomapperProfile {                                                                                                                                                                              
  constructor(@InjectMapper() mapper: Mapper) {                                                                                                                                                                                                  
    super(mapper);                                                                                                                                                                                                                    
  }                                                                                                                                                                                                                                            
  mapProfile() {                                                                                                                                                                                                                        
    return (mapper: Mapper) => {                                                                                                                                                                                                      
      mapper.createMap(HostInstitutionAdmin, HostInstitutionAdminOutputDto)                                                                                                                                                         
        .forMember((destination) => destination.account, mapFrom((source) => source.accountUsername))                                                                                                                                                                                                                                                                       
    }                                                                                                                                                                                                                                 
  }                                                                                                                                                                                                                                     } 

I'm using MapInterceptor for NestJS controller.

[nartc]

Looks ok to me. Can you provide a sample reproduce?