Unfortunately, the code snippet provided is not functioning as expected. Here's what I attempted:
const x = Object.create(Set.prototype)
x.has(1)const y = Object.create(Map.prototype)
y.get(1)I wanted a method to generate empty objects regardless of their type. What could be causing this approach to fail in providing that functionality?
Object.create generates a fresh standard object that inherits from the provided argument without any initialization, such as invoking the constructor.
For Set and Map, it is crucial to call the constructor because it establishes the necessary internal slots needed for the collection to operate (specifically, to store elements). These internal slots must be created alongside the object and cannot be added later on. This can only be achieved by using the constructor with the new keyword.
By utilizing Object.create, objects inherit has and get methods from their respective prototype objects smoothly. However, when these methods are called, the receiver (this value) is the standard object lacking the essential internal slots that would make it a true Set or Map, resulting in exceptions being thrown.
An improved method for achieving this:
invoke the new constructor function, using the object's actual contructor.
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