Package

underscore

JavaScript's functional programming helper library.

v1.13.8, 19 Feb 2026MITESM + CommonJSTypes: NoneUtility libraries

$ npm install underscore

npm GitHub Homepage

Key numbers

As of 25 Sept 2026

Weekly downloads: 21.5m; +55% over 12 months
Gzip bundle size: -; No Bundlephobia data
Dependencies: 0; Direct, from package.json
Last release: 7 months ago; v1.13.8
GitHub stars: 27.3k; 5.4k forks
Open issues / PRs: 31 / 22
Contributors: -
Commits, last 52 weeks: 44

Downloads

Last week 2026-09-15 to 2026-09-21

Weekly npm downloads, one point per week, weeks starting 23 Sept 2025 to 15 Sept 2026. The y axis starts at zero.

21,549,633 downloads last week, 95,669,205 in the last month. The 12-month change of +55% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months: 151 in total
Latest version: 1.13.8, 19 Feb 20267 months ago
First published: 9 Jan 2011
Last push to GitHub: 22 Sept 20263 days before the snapshot
Repository archived: No
Open issues: 31
Open pull requests: 22
Commits, last 52 weeks: 44
Dependents on npm: 23,030

Major versions

v1 first release 1.2.2, 14 Nov 2011

Recent releases

Version	Published
1.13.8	19 Feb 2026
1.13.7	24 Jul 2024
1.13.6	23 Sept 2022
1.13.5	23 Sept 2022
1.13.4	2 Jun 2022
1.13.3	23 Apr 2022
1.13.2	16 Dec 2021
1.13.1	15 Apr 2021
1.13.0	9 Apr 2021
1.12.1	15 Mar 2021
1.12.0	24 Nov 2020
1.11.0	28 Aug 2020
1.10.2	30 Mar 2020
1.10.1	30 Mar 2020

Compatibility

Module format: ESM + CommonJSFrom package.json type, main and exports fields
TypeScript types: None
Node.js engine range: Not declared
Runtimes: -
Unpacked size (npm): 887 kB
Dependencies (0): None

Install

npm install underscore

CDN

jsDelivr: 29.8m requests in 30 days

jsDelivrhttps://cdn.jsdelivr.net/npm/underscore@1.13.8/
unpkghttps://unpkg.com/underscore@1.13.8/
esm.shhttps://esm.sh/underscore@1.13.8

Sources: npm registry, npm downloads API, GitHub API, jsDelivr. Data fetched 25 Sept 2026.

Indexability: Indexed.