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Package

jackspeak

A very strict and proper argument parser.

v4.2.3, 7 Feb 2026BlueOak-1.0.0ESM + CommonJSTypes: BundledCLI tools and terminal utilities
$ npm install jackspeak

Key numbers

As of 25 Sept 2026
Weekly downloads
81.1m
+48% over 12 months
Gzip bundle size
-
No Bundlephobia data
Dependencies
1
Direct, from package.json
Last release
7 months ago
v4.2.3
GitHub stars
61
7 forks
Open issues / PRs
2 / 0
Contributors
3
Commits, last 52 weeks
11

Downloads

Last week 2026-09-15 to 2026-09-21
050m100m150mSept 2025Mar 2026Sept 2026High 133.8m (16 Jun 2026)Low 36.4m (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.

81,121,904 downloads last week, 411,530,748 in the last month. The 12-month change of +48% compares the average of the last 4 weeks with the first 4 weeks of the series.

Releases, last 12 months
566 in total
Latest version
4.2.3, 7 Feb 20267 months ago
First published
18 Jan 2019
Last push to GitHub
7 Feb 2026230 days before the snapshot
Repository archived
No
Open issues
2
Open pull requests
0
Commits, last 52 weeks
11
Dependents on npm
631

Major versions

  1. v4 first release 4.0.0, 8 Jul 2024
  2. v3 first release 3.0.0, 18 May 2024
  3. v2 first release 2.0.0, 10 Apr 2023
  4. v1 first release 1.0.0, 20 Jan 2019
  5. v0 first release 0.0.1, 18 Jan 2019

Recent releases

VersionPublished
4.2.37 Feb 2026
4.2.27 Feb 2026
4.2.15 Feb 2026
4.2.05 Feb 2026
4.1.25 Feb 2026
4.1.122 May 2025
4.1.022 Feb 2025
4.0.311 Feb 2025
4.0.223 Sept 2024
3.4.310 Jul 2024
4.0.18 Jul 2024
4.0.08 Jul 2024
3.4.28 Jul 2024
3.4.16 Jul 2024
Module format
ESM + CommonJSFrom package.json type, main and exports fields
TypeScript types
Bundled
Node.js engine range
20 || >=22
Runtimes
-
Unpacked size (npm)
635 kB
Dependencies (1)
@isaacs/cliui
npm install jackspeak
  • jsDelivrhttps://cdn.jsdelivr.net/npm/jackspeak@4.2.3/
  • unpkghttps://unpkg.com/jackspeak@4.2.3/
  • esm.shhttps://esm.sh/jackspeak@4.2.3
PackageWeekly downloadsGzipLast releaseModuleComparison
command-line-args5.7m-6 months agoESM + CommonJS-
yargs194.7m-4 days agoESM only-
clipanion3.6m-2 years agoESM + CommonJS-
optimist3.5m-12 years agoCommonJS-
yargs-parser193.6m-1 year agoESM only-
commander375.2m-3 months agoESM only-
dashdash16.1m-5 years agoCommonJS-
Sources: npm registry, npm downloads API, GitHub API. Data fetched 25 Sept 2026.

Indexability: Indexed.