value property

Implementation

@override
T get value {
  if (active != null) subscribe(active as Observer<T>);
  switch (_state) {
    case State.initializing:
    case State.computing:
      throw CircularDependencyError();
    case State.computed:
      return _value as T;
    case State.errored:
      throw UnhandledError(_error!, _stackTrace!);
  }
}