Package

on-headers

Execute a listener when a response is about to write headers

v1.1.0, 17 Jul 2025MIT-Types: NoneNode.js utilities

$ npm install on-headers

npm GitHub Homepage

Key numbers

As of 25 Sept 2026

Weekly downloads: 38m; +51% over 12 months
Gzip bundle size: -; No Bundlephobia data
Dependencies: 0; Direct, from package.json
Last release: 1 year ago; v1.1.0
GitHub stars: 163; 35 forks
Open issues / PRs: 2 / 5
Contributors: 9
Commits, last 52 weeks: 7

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.

38,039,770 downloads last week, 162,092,806 in the last month. The 12-month change of +51% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months: 05 in total
Latest version: 1.1.0, 17 Jul 20251 year ago
First published: 14 May 2014
Last push to GitHub: 24 Jun 202692 days before the snapshot
Repository archived: No
Open issues: 2
Open pull requests: 5
Commits, last 52 weeks: 7
Dependents on npm: 1,578

Major versions

v1 first release 1.0.0, 10 Aug 2014
v0 first release 0.0.0, 14 May 2014

Recent releases

Version	Published
1.1.0	17 Jul 2025
1.0.2	22 Feb 2019
1.0.1	30 Sept 2015
1.0.0	10 Aug 2014
0.0.0	14 May 2014

Compatibility

Module format: -Not determined from package.json
TypeScript types: None
Node.js engine range: >= 0.8
Runtimes: -
Unpacked size (npm): 8.6 kB
Dependencies (0): None

Install

npm install on-headers

CDN

jsDelivrhttps://cdn.jsdelivr.net/npm/on-headers@1.1.0/
unpkghttps://unpkg.com/on-headers@1.1.0/
esm.shhttps://esm.sh/on-headers@1.1.0

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

Indexability: Indexed.