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Lodash _.isWeakSet() Method - GeeksforGeeks

Last Updated : 03 Nov, 2023

Lodash _.isWeakSet() method is used to find whether the given value is a weakset object or not. It returns true if the given value is a weak object. Otherwise, it returns false.

_.isWeakSet(value);

• value: This parameter holds the value to check.

This method returns true if the value is a weak set, else false.

Example 1: In this example, we are checking whether the given value is a weak set or not and printing the output accordingly.

// Requiring the lodash library  
const _ = require("lodash");

// Use of _.isWeakSet() method 
console.log(_.isWeakSet(new Set));

Output:

false

Example 2: In this example, we are checking whether the given value is a weak set or not and printing the output accordingly.

// Requiring the lodash library  
const _ = require("lodash");  
    
// Use of _.isWeakSet() method 
console.log(_.isWeakSet(new WeakSet));

 Output:

true

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