Problem with subclasses

[Rado-1]

A problem with this implementation of singleton for sub-classes is that it depends on order of instantiation objects - if you first instantiate parent class and then the sub-class they share the same singleton object of parent class. For instance, taking the example from your README:

new Parent() === new ChildSingleton()

returns true, which is the problem, because I would expect that new ChildSingleton() is a different object that new Parent().

But:

new ChildSingleton() === new Parent()

returns false as expected.