## Use case !heading

Sometimes your functions handle data that match one-to-one to an object, but you don't have that object in the scope, and don't want to create a new one (especially if the object has states that could already have been mutated).

SingletonFactory is provided by module 'singletons'. Given a constructor and a set of options hinting at what to expect, it returns a Singleton function that will always return the same object constructed once from the passed constructor and the same set of arguments (strict equality).