lodash.isequal

What is lodash.isequal?

The lodash.isequal npm package is a utility function for performing deep equality comparisons between two values. It is capable of comparing arrays, objects, and primitive values to determine if they are equivalent in structure and value.

What are lodash.isequal's main functionalities?

Deep comparison of objects

This feature allows for the deep comparison of two objects, checking if they have the same properties and values.

const isEqual = require('lodash.isequal');

const object1 = { 'a': 1, 'b': 2 };
const object2 = { 'a': 1, 'b': 2 };

console.log(isEqual(object1, object2)); // true

Deep comparison of arrays

This feature enables the comparison of two arrays, verifying if they contain the same elements in the same order.

const isEqual = require('lodash.isequal');

const array1 = [1, 2, 3];
const array2 = [1, 2, 3];

console.log(isEqual(array1, array2)); // true

Comparison of nested structures

This functionality allows for the comparison of nested structures, ensuring that even deeply nested properties and values are equivalent.

const isEqual = require('lodash.isequal');

const object1 = { 'a': 1, 'b': { 'c': 2 } };
const object2 = { 'a': 1, 'b': { 'c': 2 } };

console.log(isEqual(object1, object2)); // true

Other packages similar to lodash.isequal

deep-equal

This package offers deep comparison functionality similar to lodash.isequal. It can be used to assert deep equality of objects, arrays, and other nested structures. The main difference lies in the implementation details and the specific edge cases handled by each library.

fast-deep-equal

fast-deep-equal is a package that provides a fast deep equality comparison algorithm. It is known for its performance and is often used in scenarios where speed is critical. Compared to lodash.isequal, it might offer faster comparisons in certain cases but may not handle as many edge cases.

README

lodash.isequal v3.0.0

The modern build of lodash’s _.isEqual exported as a Node.js/io.js module.

Installation

Using npm:

$ {sudo -H} npm i -g npm
$ npm i --save lodash.isequal

In Node.js/io.js:

var isEqual = require('lodash.isequal');

See the documentation or package source for more details.