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Package

moo

Optimised tokenizer/lexer generator! 🐄 Much performance. Moo!

v0.5.3, 27 Feb 2026BSD-3-ClauseCommonJSTypes: None
$ npm install moo
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Key numbers

As of 25 Sept 2026
Weekly downloads
8.3m
+79% over 12 months
Gzip bundle size
-
No Bundlephobia data
Dependencies
0
Direct, from package.json
Last release
6 months ago
v0.5.3
GitHub stars
-
Open issues / PRs
- / -
Contributors
-
Commits, last 52 weeks
-

Downloads

Last week 2026-09-15 to 2026-09-21
05m10m15mSept 2025Mar 2026Sept 2026High 11.6m (25 Aug 2026)Low 3m (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.

8,331,569 downloads last week, 38,070,979 in the last month. The 12-month change of +79% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months
116 in total
Latest version
0.5.3, 27 Feb 20266 months ago
First published
15 May 2012
Last push to GitHub
-
Repository archived
-
Open issues
-
Open pull requests
-
Commits, last 52 weeks
-
Dependents on npm
310

Major versions

  1. v0 first release 0.0.0, 15 May 2012

Recent releases

VersionPublished
0.5.327 Feb 2026
0.5.23 Oct 2022
0.5.129 Sept 2019
0.5.09 Nov 2018
0.4.314 Sept 2017
0.4.23 Sept 2017
0.4.19 Aug 2017
0.4.024 Jul 2017
0.3.313 Jun 2017
0.3.25 May 2017
0.3.112 Apr 2017
0.3.09 Apr 2017
0.2.027 Mar 2017
0.1.117 Mar 2017

Compatibility

Module format
CommonJSFrom package.json type, main and exports fields
TypeScript types
None
Node.js engine range
Not declared
Runtimes
-
Unpacked size (npm)
32 kB
Dependencies (0)
None

Install

npm install moo

CDN

  • jsDelivrhttps://cdn.jsdelivr.net/npm/moo@0.5.3/
  • unpkghttps://unpkg.com/moo@0.5.3/
  • esm.shhttps://esm.sh/moo@0.5.3
Sources: npm registry, npm downloads API. Data fetched 25 Sept 2026.

Indexability: Not indexed (discovery only): GitHub data not fetched yet; no category.