Package
ow
Function argument validation for humans
Key numbers
As of 25 Sept 2026
- Weekly downloads
- 2.3m
- +135% over 12 months
- Gzip bundle size
- -
- No Bundlephobia data
- Dependencies
- 6
- Direct, from package.json
- Last release
- 11 months ago
- v3.1.1
- GitHub stars
- 3.9k
- 111 forks
- Open issues / PRs
- 0 / 0
- Contributors
- -
- Commits, last 52 weeks
- 12
Downloads
Last week 2026-09-15 to 2026-09-21
2,264,154 downloads last week, 11,467,867 in the last month. The 12-month change of +135% compares the average of the last 4 weeks with the first 4 weeks of the series.
- Releases, last 12 months
- 246 in total
- Latest version
- 3.1.1, 16 Oct 202511 months ago
- First published
- 4 Feb 2016
- 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
- 12
- Dependents on npm
- 500
Major versions
- v3 first release 3.0.0, 9 Sept 2025
- v2 first release 2.0.0, 5 May 2024
- v1 first release 1.0.0, 13 Jun 2022
- v0 first release 0.0.1, 21 Sept 2017
Recent releases
| Version | Published |
|---|---|
| 3.1.1 | 16 Oct 2025 |
| 3.1.0 | 10 Oct 2025 |
| 3.0.0 | 9 Sept 2025 |
| 2.0.0 | 5 May 2024 |
| 1.1.1 | 26 Jan 2023 |
| 1.1.0 | 3 Oct 2022 |
| 0.28.2 | 3 Oct 2022 |
| 1.0.0 | 13 Jun 2022 |
| 0.28.1 | 4 Oct 2021 |
| 0.28.0 | 22 Sept 2021 |
| 0.27.0 | 16 Jul 2021 |
| 0.26.0 | 2 Jul 2021 |
| 0.25.0 | 26 Jun 2021 |
| 0.24.1 | 5 Jun 2021 |
- Module format
- ESM onlyFrom package.json type, main and exports fields
- TypeScript types
- Bundled
- Node.js engine range
- >=20
- Runtimes
- -
- Unpacked size (npm)
- 150 kB
- Dependencies (6)
dot-propcallsitesenvironmentfast-equalsis-identifier@sindresorhus/is
npm install ow- jsDelivr
https://cdn.jsdelivr.net/npm/ow@3.1.1/ - unpkg
https://unpkg.com/ow@3.1.1/ - esm.sh
https://esm.sh/ow@3.1.1
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|---|---|---|---|---|---|
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Indexability: Indexed.