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Package

sinon

JavaScript test spies, stubs and mocks.

v22.1.0, 20 Jul 2026BSD-3-ClauseESM + CommonJSTypes: NoneTesting
$ npm install sinon
npmGitHubHomepage

Key numbers

As of 25 Sept 2026
Weekly downloads
8.3m
+17% over 12 months
Gzip bundle size
-
No Bundlephobia data
Dependencies
4
Direct, from package.json
Last release
2 months ago
v22.1.0
GitHub stars
9.8k
809 forks
Open issues / PRs
43 / 26
Contributors
-
Commits, last 52 weeks
80

Downloads

Last week 2026-09-15 to 2026-09-21
05m10m15mSept 2025Mar 2026Sept 2026High 12.2m (21 Jul 2026)Low 3.7m (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.

8,284,521 downloads last week, 41,676,059 in the last month. The 12-month change of +17% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months
8211 in total
Latest version
22.1.0, 20 Jul 20262 months ago
First published
20 Dec 2010
Last push to GitHub
10 Sept 202614 days before the snapshot
Repository archived
No
Open issues
43
Open pull requests
26
Commits, last 52 weeks
80
Dependents on npm
3,963

Major versions

  1. v22 first release 22.0.0, 5 May 2026
  2. v21 first release 21.0.0, 13 Jun 2025
  3. v20 first release 20.0.0, 24 Mar 2025
  4. v19 first release 19.0.0, 13 Sept 2024
  5. v18 first release 18.0.0, 15 May 2024
  6. v17 first release 17.0.0, 20 Oct 2023
  7. v16 first release 16.0.0, 13 Sept 2023
  8. v15 first release 15.0.0, 28 Nov 2022
  9. v14 first release 14.0.0, 7 May 2022
  10. v13 first release 13.0.0, 28 Jan 2022
  11. v12 first release 12.0.0, 3 Nov 2021
  12. v11 first release 11.0.0, 24 May 2021
  13. v10 first release 10.0.0, 22 Mar 2021
  14. v9 first release 9.0.0, 19 Feb 2020
  15. v8 first release 8.0.0, 22 Dec 2019
  16. v7 first release 7.0.0, 14 Oct 2018
  17. v6 first release 6.0.0, 11 Jun 2018
  18. v5 first release 5.0.0, 11 Jan 2018
  19. v4 first release 4.0.0, 26 Sept 2017
  20. v3 first release 3.0.0, 3 Aug 2017
  21. v2 first release 2.0.0, 15 Mar 2017
  22. v0 first release 0.6.2, 20 Dec 2010
  23. v1 first release 1.0.1, 20 Dec 2010

Recent releases

VersionPublished
22.1.020 Jul 2026
22.0.05 May 2026
21.1.211 Apr 2026
21.1.110 Apr 2026
21.1.09 Apr 2026
21.0.316 Mar 2026
21.0.24 Mar 2026
21.0.119 Dec 2025
21.0.013 Jun 2025
20.0.024 Mar 2025
19.0.524 Mar 2025
19.0.419 Mar 2025
19.0.319 Mar 2025
19.0.213 Sept 2024

Compatibility

Module format
ESM + CommonJSFrom package.json type, main and exports fields
TypeScript types
None
Node.js engine range
Not declared
Runtimes
-
Unpacked size (npm)
2.4 MB
Dependencies (4)
diff@sinonjs/samsam@sinonjs/commons@sinonjs/fake-timers

Install

npm install sinon

CDN

jsDelivr: 147k requests in 30 days
  • jsDelivrhttps://cdn.jsdelivr.net/npm/sinon@22.1.0/
  • unpkghttps://unpkg.com/sinon@22.1.0/
  • esm.shhttps://esm.sh/sinon@22.1.0

Alternatives

PackageWeekly downloadsGzipLast releaseModuleComparison
chai85.9m-9 months agoESM only-
Sources: npm registry, npm downloads API, GitHub API, jsDelivr. Data fetched 25 Sept 2026.

Indexability: Indexed.