how to use the isweakset function from the underscore library in javascript

The isWeakSet function in the Underscore library checks if a value is a WeakSet object or not. Here's an example of how to use it:

index.tsx
const _ = require('underscore');

const mySet = new Set([1, 2, 3]);
const myWeakSet = new WeakSet([{a: 1}, {b: 2}]);

console.log(_.isWeakSet(mySet)); // false
console.log(_.isWeakSet(myWeakSet)); // true
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In the example above, we create a Set object called mySet and a WeakSet object called myWeakSet. We then use the isWeakSet function to check if each object is a WeakSet or not. The first call to isWeakSet returns false because mySet is a Set, not a WeakSet, while the second call returns true because myWeakSet is indeed a WeakSet.

Note that the isWeakSet function is only available in the Underscore library version 1.10.0 or higher.