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Lodash _.isWeakSet


The lodash _.isWeakSet method is a utility function that belongs to the Lodash library. It is used to determine whether a given value is a WeakSet. In JavaScript, a WeakSet is a built-in object that is similar to a Set, except that it can only contain weakly held objects.

The _.isWeakSet method takes a single argument, which is the value to be checked, and returns a boolean value indicating whether the value is a WeakSet or not. If the value is a WeakSet, the method returns true. If the value is not a WeakSet, the method returns false.

Here is an example of how to use the _.isWeakSet method:

const _ = require('lodash');

const weakSet = new WeakSet();
const myObject = {};


console.log(_.isWeakSet(weakSet)); // logs true
console.log(_.isWeakSet(myObject)); // logs false

In the example above, we create a WeakSet object and add an object to it. We then use the _.isWeakSet method to check whether the weakSet value is a WeakSet. We also check whether the myObject value is a WeakSet (which it clearly is not).

The _.isWeakSet method is useful in cases where you need to determine whether a given value is a WeakSet, such as when writing generic utility functions that are designed to work with different types of collections or data structures.

Overall, the lodash _.isWeakSet method is a simple and effective way to check whether a value is a WeakSet, providing a valuable tool for developers working with JavaScript collections and data structures.