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lodash/lodash

A modern JavaScript utility library delivering modularity, performance, & extras.
Source code at GitHub https://lodash.com/
lodash/lodash.json
{
  "createdAt": "2012-04-07T04:11:46Z",
  "defaultBranch": "main",
  "description": "A modern JavaScript utility library delivering modularity, performance, & extras.",
  "fullName": "lodash/lodash",
  "homepage": "https://lodash.com/",
  "language": "JavaScript",
  "name": "lodash",
  "pushedAt": "2025-11-19T12:38:23Z",
  "stargazersCount": 61423,
  "topics": [
    "javascript",
    "lodash",
    "modules",
    "utilities"
  ],
  "updatedAt": "2025-11-27T01:16:32Z",
  "url": "https://github.com/lodash/lodash"
}

lodash v4.17.21

Section titled “lodash v4.17.21”

Site | Docs | FP Guide | Contributing | Wiki | Code of Conduct | Governance | Twitter | Chat

[!IMPORTANT] As announced on the OpenJS Foundation blog, Lodash has received support from the Sovereign Tech Agency and will transition to the Feature-Complete maturity stage so that it remains stable, secure, and sustainable long-term. As part of this effort, Lodash is rebooting its governance. A draft charter will be published shortly. The upcoming Technical Steering Committee (TSC) is already at work. For transparency, its members are listed in GOVERNANCE.md.

The Lodash library exported as a UMD module.

Generated using lodash-cli:

Terminal window
$ npm run build
$ lodash -o ./dist/lodash.js
$ lodash core -o ./dist/lodash.core.js

Download

Section titled “Download”

Lodash is released under the MIT license & supports modern environments.
Review the build differences & pick one that’s right for you.

Installation

Section titled “Installation”

In a browser:

<script unsrc="lodash.js"></script>

Using npm:

Terminal window
$ npm i -g npm
$ npm i --save lodash

In Node.js:

// Load the full build.
var _ = require('lodash');
// Load the core build.
var _ = require('lodash/core');
// Load the FP build for immutable auto-curried iteratee-first data-last methods.
var fp = require('lodash/fp');


// Load method categories.
var array = require('lodash/array');
var object = require('lodash/fp/object');


// Cherry-pick methods for smaller browserify/rollup/webpack bundles.
var at = require('lodash/at');
var curryN = require('lodash/fp/curryN');

Note:
Install n_ for Lodash use in the Node.js < 6 REPL.

Why Lodash?

Section titled “Why Lodash?”

Lodash makes JavaScript easier by taking the hassle out of working with arrays,
numbers, objects, strings, etc. Lodash’s modular methods are great for:

  • Iterating arrays, objects, & strings
  • Manipulating & testing values
  • Creating composite functions

Module Formats

Section titled “Module Formats”

Lodash is available in a variety of builds & module formats.