Package
is-function
is that thing a function? Use this module to find out
Key numbers
As of 25 Sept 2026
- Weekly downloads
- 3.6m
- +19% over 12 months
- Gzip bundle size
- -
- No Bundlephobia data
- Dependencies
- 0
- Direct, from package.json
- Last release
- 6 years ago
- v1.0.2
- GitHub stars
- 4
- 3 forks
- Open issues / PRs
- 0 / 0
- Contributors
- -
- Commits, last 52 weeks
- 0
Downloads
Last week 2026-09-15 to 2026-09-21
3,552,964 downloads last week, 17,015,610 in the last month. The 12-month change of +19% compares the average of the last 4 weeks with the first 4 weeks of the series.
- Releases, last 12 months
- 04 in total
- Latest version
- 1.0.2, 22 Apr 20206 years ago
- First published
- 7 Jan 2014
- Last push to GitHub
- 22 Apr 20202,346 days before the snapshot
- Repository archived
- No
- Open issues
- 0
- Open pull requests
- 0
- Commits, last 52 weeks
- 0
- Dependents on npm
- 189
Major versions
- v1 first release 1.0.0, 7 Jan 2014
- v0 first release 0.0.0, 7 Jan 2014
Recent releases
| Version | Published |
|---|---|
| 1.0.2 | 22 Apr 2020 |
| 1.0.1 | 18 Feb 2014 |
| 1.0.0 | 7 Jan 2014 |
| 0.0.0 | 7 Jan 2014 |
- Module format
- CommonJSFrom package.json type, main and exports fields
- TypeScript types
- None
- Node.js engine range
- Not declared
- Runtimes
- -
- Unpacked size (npm)
- 4.2 kB
- Dependencies (0)
- None
npm install is-function- jsDelivr
https://cdn.jsdelivr.net/npm/is-function@1.0.2/ - unpkg
https://unpkg.com/is-function@1.0.2/ - esm.sh
https://esm.sh/is-function@1.0.2
Indexability: Indexed.