Using singletone inside other singletone leads to error

[andzejsw]

I have 2 singletones. First is for user preferences and second is for connection with server.
Inside WampService (connection singletone) i am implementing InternalSettings (preferences singletone) like this:
InternalSettings mInternalSettings = locator<InternalSettings>();

My setup locator looks like this:

void setupLocator() async {
  var iSettingsInstance = await InternalSettings.getInstance();
  var iWampInstance = await WampService.getInstance();
  locator.registerSingleton<InternalSettings>(iSettingsInstance);
  locator.registerSingleton<WampService>(iWampInstance);
}

Is there some way to implement singletones, which ones also depends from other singletones?
Error message is inside WampService file, where i am using locator: InternalSettings is not registered inside GetIt.

[andzejsw]

I got over this issue by implementing InternalSettings inside WampService getInstance() method:

  static Future<WampService> getInstance() async {
    if (_instance == null) {
      _instance = WampService();
    }
    if(_internalSettings == null) {
      _internalSettings = await InternalSettings.getInstance();
    }
    return _instance;
  }

So for now i will close issue.