registerLazySingleton unexpected behavior

[computervirus91]

This does NOT WORK,
GetIt.I.registerLazySingleton(() => SingletonInjector.configuration(RepoType.PROD));

ERROR,
══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
The following ArgumentError was thrown building Builder(dirty):
Invalid argument (Object of type Injector is not registered inside GetIt.
Did you forget to pass an instance name?
(Did you accidentally do GetIt sl=GetIt.instance(); instead of GetIt sl=GetIt.instance;)): Instance
of '_Type'

But this WORKS,
Injector inj = SingletonInjector.configuration(RepoType.PROD);
GetIt.I.registerLazySingleton(() => inj);

[escamoteur]

Which version are you using?

[computervirus91]

Which version are you using?

get_it: 3.1.0

[escamoteur]

This is definitively strange. I have a closer look

[escamoteur]

It works for me see my Test Code:

  test('register LazySingleton with lambda and factory function', () {
    GetIt.I.registerLazySingleton(() => SingletonInjector.configuration());

    final instance = GetIt.I<Injector>();

    expect(instance, TypeMatcher<Injector>());
  });
}

class SingletonInjector {
  static Injector configuration() {
    return Injector();
  }
}

class Injector {}

I would have to see the code for your injector and SinglettonInjector.

Overall I want to add, you should always provide a type or a name when registering something, you didn't either. it only worked because of type inference.
My guess would be that configurationdoes not have a return type declared.

[escamoteur]

Please also test the latest beta #46

[computervirus91]

//########################################################################
// injector_interface.dart
----------------------------

enum RepoType {
  MOCK,
  PROD,
}

abstract class Injector{
  //getter and setter
  LocationTracker get locationTracker;
  Repository get repo;

  //method
  void configureInjector(RepoType repoType);

  void dispose();
}
//#######################################################################
//singleton_injector.dart
---------------------------


class SingletonInjector implements Injector {
  //class property
  static final SingletonInjector _singleton = SingletonInjector._internal();
  static RepoType _repoType;

  //getter and setter

  //class constructor
  factory SingletonInjector.configuration(RepoType repoType) {
    _configure(repoType);
    return _singleton;
  }

  SingletonInjector._internal();

  //class methods
  static void _initRepo() {
    //repository
    switch (_repoType) {
      case RepoType.MOCK:
        GetIt.I.registerLazySingleton<Repository>(() => RepoPROD());
        break;
      default:
        GetIt.I.registerLazySingleton<Repository>(() => RepoPROD());
    }

    //location tracker
  }

  //configure injector methods
  @override
  void configureInjector(RepoType repoType) {
    _configure(repoType);
  }

  //config wrapper
  static void _configure(RepoType repoType) {
    print("_configure from injector");
    GetIt.I.reset();
    _repoType = repoType;
    _initRepo();
    kIsWeb ? _configureForWeb() : _configureForMobile();
  }

  @override
  void dispose() {
    repo.cloudDB.dispose();
    GetIt.I.reset();
  }
}

[computervirus91]

It works for me see my Test Code:

  test('register LazySingleton with lambda and factory function', () {
    GetIt.I.registerLazySingleton(() => SingletonInjector.configuration());

    final instance = GetIt.I<Injector>();

    expect(instance, TypeMatcher<Injector>());
  });
}

class SingletonInjector {
  static Injector configuration() {
    return Injector();
  }
}

class Injector {}

I would have to see the code for your injector and SinglettonInjector.

Overall I want to add, you should always provide a type or a name when registering something, you didn't either. it only worked because of type inference.
My guess would be that configurationdoes not have a return type declared.

this is the code for injector and its singleton implementation

[escamoteur]

Yeah, I guess Dart has a problem infferring the type for factory constructors please do

`` Dart
GetIt.I.registerLazySingleton(() => SingletonInjector.configuration(RepoType.PROD));

which is the correct way if you don't use a named instance

[computervirus91]

Yeah, I guess Dart has a problem infferring the type for factory constructors please do

`` Dart
GetIt.I.registerLazySingleton(() => SingletonInjector.configuration(RepoType.PROD));

which is the correct way if you don't use a named instance

thank you for your reply