npm · npm:moo

moo active

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

The latest stable version of moo is 0.5.3, published on 2026-02-27. Verified by Vigia on 2026-11-12.

Latest stable version	0.5.3
Published	2026-02-27 21:54:51 UTC
Install	`npm install moo@latest`
Requires (engines)	none declared
Peer dependencies	—
Dist-tags	`latest: 0.5.3`
License	BSD-3-Clause
Advisories on latest version	none known
Last verified	2026-11-12 14:43:00 UTC
Sources	api.deps.dev, registry.npmjs.org, registry.npmjs.org

Maintenance

Activity	slowing down
Last stable release	2026-02-27 21:54:51 UTC · 258 days ago
Stable releases in the last 12 months	1
Published versions	16

Heuristic based only on release dates; it does not measure issue or security response times.

Version history

Version	Published
`0.5.3`	2026-02-27 21:54:51 UTC
`0.5.2`	2022-10-03 11:25:52 UTC
`0.5.1`	2019-09-29 18:31:17 UTC
`0.5.0`	2018-11-09 18:38:10 UTC
`0.4.3`	2017-09-14 10:07:46 UTC
`0.4.2`	2017-09-03 16:28:39 UTC
`0.4.1`	2017-08-09 16:17:50 UTC
`0.4.0`	2017-07-24 19:56:48 UTC
`0.3.3`	2017-06-13 19:01:40 UTC
`0.3.2`	2017-05-05 14:42:41 UTC
`0.3.1`	2017-04-12 12:10:02 UTC
`0.3.0`	2017-04-09 20:56:37 UTC
`0.2.0`	2017-03-27 18:38:15 UTC
`0.1.1`	2017-03-17 18:11:03 UTC
`0.1.0`	2017-03-17 16:43:52 UTC
`0.0.0`	2012-05-15 17:54:42 UTC

Showing the 16 most recent of 16 versions. JSON

Version compatibility

Newest stable version that declares support for each runtime version (from the requirements published with each version).

Runtime	Newest compatible version
`node 16`	`0.5.3`
`node 18`	`0.5.3`
`node 20`	`0.5.3`
`node 22`	`0.5.3`
`node 24`	`0.5.3`

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Frequently asked questions

What is the latest version of moo?

The latest stable version of moo is 0.5.3, published on 2026-02-27. Verified by Vigia on 2026-11-12.

How do I install the latest version of moo?

Run npm install moo@latest. The latest stable version is 0.5.3 (verified 2026-11-12).

Is moo deprecated?

No. moo is not marked as deprecated in the registry.

Which Node.js version does moo require?

moo 0.5.3 does not declare a Node.js version requirement.

Does moo 0.5.3 have known vulnerabilities?

No known advisories affect moo 0.5.3 according to the data Vigia checks.

Is moo still maintained?

moo published 1 stable releases in the last 12 months; the most recent was 258 days ago. Activity: slowing down.

Observed changes

No changes observed yet since Vigia started tracking this package.

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