A WeakSet is a collection of objects where each object is held weakly. This means the objects in a WeakSet are not prevented from being garbage-collected when there are no other references to them. It only accepts objects, and it does not allow duplicates.
Example:
const obj1 = { name: 'John' };
const obj2 = { name: 'Jane' };
const weakset = new WeakSet([obj1, obj2]);
console.log(weakset.has(obj1)); // trueTags: basic, JavaScript, collections
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