What is the purpose of the WeakMap and WeakSet in ES6 compared to Map and Set?
- They have better performance characteristics for certain use cases.
- They are used for storing weakly held references to objects.
- They have additional methods for manipulating keys and values.
- They have stricter key equality rules.
WeakMap and WeakSet are designed for scenarios where you want to associate additional data with objects without preventing garbage collection. They are used for weakly held references.
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