lodash

A modern utility library delivering modularity, performance, and extras for working with arrays, objects, and functions.

lodash

General JS

A modern utility library delivering modularity, performance, and extras for working with arrays, objects, and functions.

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Fit

Bundle (gzip)

25.3 kB

70.2 kB raw

Install size includes transitive dependencies. Bundle size is gzipped browser payload.

Freshness

The Problem

Everyday data wrangling — deep cloning, grouping, debouncing, deep property access, and set operations — is verbose and error-prone with plain JavaScript, and hand-rolled helpers tend to drift and break on edge cases like null or nested values.

What It Does

lodash provides hundreds of battle-tested, consistent utilities for collections, objects, strings, and functions. It handles edge cases predictably, supports per-method imports to keep bundles small, and is one of the most depended-upon packages in the npm ecosystem.

Installation

bash
npm install lodash

Usage Example

js
import { groupBy, debounce, get } from "lodash";

const users = [
  { name: "Ada", team: "core" },
  { name: "Lin", team: "core" },
  { name: "Max", team: "ops" },
];

console.log(groupBy(users, "team"));
// { core: [...], ops: [...] }

console.log(get(users, "[0].name")); // "Ada"

const onSearch = debounce((q) => console.log("search:", q), 200);
onSearch("lo");

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