What is `WeakSet` in JavaScript and how does it differ from `Set`?

Question

JavaScript Professional — Medium

What is `WeakSet` in JavaScript and how does it differ from `Set`?

Accepted Answer

WeakSet in JavaScript only holds objects with weak references, allowing for garbage collection. It is non-iterable and lacks a size property. On the other hand, Set can store any value type, holds strong references, is iterable, and has a size property.