How do I use weak references in JavaScript?

What are weak references in JavaScript?

Weak references are a way to reference an object without preventing it from being garbage collected.

How do I create a weak reference?

You can create a weak reference using the WeakRef constructor, like this: const weakRef = new WeakRef(object);.

When should I use weak references?

Use weak references when you want to hold a reference to an object without preventing it from being collected, like caching.

Can you give me an example of using weak references?

Sure! Here's a simple example: let obj = { name: 'example' }; let weakRef = new WeakRef(obj); obj = null; console.log(weakRef.deref()); // This may log 'undefined' if the object was garbage collected.