# lodash/lodash

A modern JavaScript utility library delivering modularity, performance, & extras.

Repository: https://github.com/lodash/lodash
Canonical: https://ross.abutalabs.com/products/lodash
Homepage: https://lodash.com/
Language: JavaScript
License: NOASSERTION
License Family: other
Topics: lodash, utilities, javascript, modules
Last push: 2026-07-03T19:48:01+00:00

## Health v2 (maintenance only)
Score: 87/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 90, release rhythm 77, longevity 100
- inputs: {"age_days": 5261, "days_push": 61, "days_rel": 154, "gap_med": 1, "n_releases_24m": 2}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 61283, forks 7195 (observed 2026-08-28T04:12:19.016818+00:00)

## What it is
Lodash is a modern JavaScript utility library providing modular, high-performance helper functions for working with arrays, objects, strings, numbers, and functions. It is available in multiple builds (core, full, FP) and module formats for browsers, Node.js, and bundlers.

## Use cases
- manipulate and transform arrays and objects in javascript
- deep clone nested objects
- debounce or throttle event handlers
- group, sort, and filter collections
- write functional-style code with auto-curried immutable methods
- reduce bundle size by cherry-picking utility methods

## When to choose
- you need battle-tested utilities for common data manipulation tasks in JavaScript
- you want modular imports to keep bundles small
- you need consistent behavior across older browsers and Node versions

## When to avoid
- your project targets only modern JS runtimes where native methods (Object.entries, Array.flat, structuredClone) suffice
- you want zero dependencies and minimal bundle size
- you are writing TypeScript-heavy code where native types and utilities integrate better

## Facets
- artifact type: library
- maturity: maintenance
- function: developer-tools
- domain: developer-tools, web-development, frontend, backend
- platform: browser, cross-platform
- tags: utility-library, functional-programming, arrays, objects, collections, debounce, deep-clone, nodejs, javascript

## Member repositories
- lodash/lodash (main) score 87

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:12:19.016818+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T16:17:31.138651+00:00, confidence not recorded.
  - readme: https://github.com/lodash/lodash (fetched 2026-08-28T04:12:19.016818+00:00, sha bc6580647215)
  - homepage: https://lodash.com/ (fetched 2026-08-28T17:58:18.134215+00:00, sha af4d03297fc1)
  - site_page: https://lodash.com/docs/ (fetched 2026-08-28T17:58:18.143216+00:00, sha 7a4f6229a120)
  - registry_npm: https://registry.npmjs.org/lodash (fetched 2026-08-28T17:58:18.148552+00:00, sha a5bf5f195b4c)
- Data as of 2026-08-30T08:39:29.467469+00:00.