@types/lodash

What is @types/lodash?

The @types/lodash package provides TypeScript type definitions for Lodash, a modern JavaScript utility library delivering modularity, performance, & extras. This allows developers to use Lodash in TypeScript projects with type checking and autocompletion features.

What are @types/lodash's main functionalities?

Array manipulation

Lodash provides a wide range of functions to manipulate arrays. The example demonstrates reversing an array.

import _ from 'lodash';

const array = [1, 2, 3, 4, 5];
const reversedArray = _.reverse(array);
console.log(reversedArray); // [5, 4, 3, 2, 1]

Object manipulation

Lodash allows for easy manipulation of objects, such as inverting keys and values in an object.

import _ from 'lodash';

const object = { 'a': 1, 'b': 2 };
const invertedObject = _.invert(object);
console.log(invertedObject); // { '1': 'a', '2': 'b' }

Collection iteration

Lodash provides functions like _.filter for iterating over collections and filtering them based on a condition.

import _ from 'lodash';

const users = [
  { 'user': 'barney', 'age': 36, 'active': true },
  { 'user': 'fred',   'age': 40, 'active': false }
];

const activeUsers = _.filter(users, (user) => user.active);
console.log(activeUsers); // [{ 'user': 'barney', 'age': 36, 'active': true }]

Other packages similar to @types/lodash

ramda

Ramda is a practical functional library for JavaScript programmers. It focuses on allowing functional programming techniques without mutating data. Compared to @types/lodash, Ramda emphasizes a more functional programming approach and immutability.

underscore

Underscore is a utility-belt library for JavaScript that provides functional programming helpers without extending any built-in objects. It's similar to Lodash in functionality but generally has fewer utilities and a smaller footprint. Lodash is often considered as a superset of Underscore with additional features and better performance.

README

Installation

npm install --save @types/lodash

Summary

This package contains type definitions for lodash (https://lodash.com).

Details

Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/lodash.

Additional Details

• Last updated: Tue, 01 Jul 2025 20:02:28 GMT
• Dependencies: none

Credits

These definitions were written by Brian Zengel, Ilya Mochalov, AJ Richardson, e-cloud, Jack Moore, Dominique Rau, and William Chelman.