Package

is-generator-fn

Check if something is a generator function

v3.0.0, 11 Aug 2021MITESM onlyTypes: None

$ npm install is-generator-fn

npm GitHub Homepage

Key numbers

As of 25 Sept 2026

Weekly downloads: 31.3m; +24% over 12 months
Gzip bundle size: -; No Bundlephobia data
Dependencies: 0; Direct, from package.json
Last release: 5 years ago; v3.0.0
GitHub stars: 24; 8 forks
Open issues / PRs: 0 / 0
Contributors: 4
Commits, last 52 weeks: 1

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.

31,287,201 downloads last week, 142,291,644 in the last month. The 12-month change of +24% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months: 04 in total
Latest version: 3.0.0, 11 Aug 20215 years ago
First published: 15 Nov 2015
Last push to GitHub: 18 Sept 20266 days before the snapshot
Repository archived: No
Open issues: 0
Open pull requests: 0
Commits, last 52 weeks: 1
Dependents on npm: 904

Major versions

v3 first release 3.0.0, 11 Aug 2021
v2 first release 2.0.0, 29 Dec 2018
v1 first release 1.0.0, 15 Nov 2015

Recent releases

Version	Published
3.0.0	11 Aug 2021
2.1.0	6 Apr 2019
2.0.0	29 Dec 2018
1.0.0	15 Nov 2015

Compatibility

Module format: ESM onlyFrom package.json type, main and exports fields
TypeScript types: None
Node.js engine range: ^12.20.0 || ^14.13.1 || >=16.0.0
Runtimes: -
Unpacked size (npm): 2.8 kB
Dependencies (0): None

Install

npm install is-generator-fn

CDN

jsDelivrhttps://cdn.jsdelivr.net/npm/is-generator-fn@3.0.0/
unpkghttps://unpkg.com/is-generator-fn@3.0.0/
esm.shhttps://esm.sh/is-generator-fn@3.0.0

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

Indexability: Not indexed (discovery only): no category.