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.
lodash.isequal v4.5.0
The Lodash method _.isEqual
exported as a Node.js module.
Installation
Using npm:
$ {sudo -H} npm i -g npm
$ npm i --save lodash.isequal
In Node.js:
var isEqual = require('lodash.isequal');
See the documentation or package source for more details.