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Package

onetime

Ensure a function is only called once

v8.0.0, 2 Feb 2026MITESM onlyTypes: Bundled
$ npm install onetime
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Key numbers

As of 25 Sept 2026
Weekly downloads
135.1m
+74% over 12 months
Gzip bundle size
-
No Bundlephobia data
Dependencies
1
Direct, from package.json
Last release
7 months ago
v8.0.0
GitHub stars
166
15 forks
Open issues / PRs
0 / 0
Contributors
9
Commits, last 52 weeks
4

Downloads

Last week 2026-09-15 to 2026-09-21
050m100m150m200mSept 2025Mar 2026Sept 2026High 182.2m (25 Aug 2026)Low 57.2m (23 Dec 2025)
Weekly npm downloads, one point per week, weeks starting 23 Sept 2025 to 15 Sept 2026. The y axis starts at zero.

135,075,834 downloads last week, 658,660,100 in the last month. The 12-month change of +74% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months
115 in total
Latest version
8.0.0, 2 Feb 20267 months ago
First published
13 Dec 2013
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
4
Dependents on npm
2,071

Major versions

  1. v8 first release 8.0.0, 2 Feb 2026
  2. v7 first release 7.0.0, 5 Nov 2023
  3. v6 first release 6.0.0, 8 Apr 2021
  4. v5 first release 5.0.0, 8 Mar 2019
  5. v4 first release 4.0.0, 1 Mar 2019
  6. v3 first release 3.0.0, 20 Jan 2019
  7. v2 first release 2.0.0, 19 Oct 2016
  8. v1 first release 1.0.0, 13 Aug 2014
  9. v0 first release 0.1.0, 13 Dec 2013

Recent releases

VersionPublished
8.0.02 Feb 2026
7.0.05 Nov 2023
6.0.08 Apr 2021
5.1.29 Aug 2020
5.1.12 Aug 2020
5.1.02 Apr 2019
5.0.08 Mar 2019
4.0.01 Mar 2019
3.0.020 Jan 2019
2.0.120 Mar 2017
2.0.019 Oct 2016
1.1.018 Dec 2015
1.0.013 Aug 2014
0.1.130 Apr 2014

Compatibility

Module format
ESM onlyFrom package.json type, main and exports fields
TypeScript types
Bundled
Node.js engine range
>=22
Runtimes
-
Unpacked size (npm)
5.6 kB
Dependencies (1)
mimic-function

Install

npm install onetime

CDN

  • jsDelivrhttps://cdn.jsdelivr.net/npm/onetime@8.0.0/
  • unpkghttps://unpkg.com/onetime@8.0.0/
  • esm.shhttps://esm.sh/onetime@8.0.0
Sources: npm registry, npm downloads API, GitHub API. Data fetched 25 Sept 2026.

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