npm · npm:proper-lockfile

proper-lockfile active

A inter-process and inter-machine lockfile utility that works on a local or network file system

The latest stable version of proper-lockfile is 4.1.2, published on 2021-01-25. Verified by Vigia on 2026-11-12.

Latest stable version	4.1.2
Published	2021-01-25 18:55:18 UTC
Install	`npm install proper-lockfile@latest`
Requires (engines)	none declared
Peer dependencies	—
Dist-tags	`latest: 4.1.2`
License	MIT
Advisories on latest version	none known
Last verified	2026-11-12 14:00:46 UTC
Sources	api.deps.dev, registry.npmjs.org, registry.npmjs.org

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Maintenance

Activity	dormant
Last stable release	2021-01-25 18:55:18 UTC · 2117 days ago
Stable releases in the last 12 months	0
Published versions	33

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

Version history

Version	Published
`4.1.2`	2021-01-25 18:55:18 UTC
`4.1.1`	2019-04-03 12:15:07 UTC
`4.1.0`	2019-03-18 15:33:34 UTC
`4.0.0`	2019-03-13 11:40:05 UTC
`3.2.0`	2018-11-19 10:58:19 UTC
`3.1.0`	2018-11-15 14:49:06 UTC
`3.0.2`	2018-01-30 00:52:28 UTC
`3.0.1`	2018-01-20 13:02:11 UTC
`3.0.0`	2018-01-20 02:52:35 UTC
`2.0.1`	2017-04-24 10:52:03 UTC
`2.0.0`	2016-09-15 00:38:49 UTC
`1.2.0`	2016-09-12 00:10:32 UTC
`1.1.3`	2016-08-20 10:37:33 UTC
`1.1.2`	2016-01-26 14:18:04 UTC
`1.1.1`	2016-01-03 13:01:03 UTC
`1.1.0`	2016-01-03 12:43:47 UTC
`1.0.2`	2015-10-03 10:57:47 UTC
`1.0.1`	2015-07-12 11:24:28 UTC
`1.0.0`	2015-04-10 07:10:22 UTC
`0.6.1`	2015-04-09 20:38:34 UTC

Showing the 20 most recent of 33 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`	`4.1.2`
`node 18`	`4.1.2`
`node 20`	`4.1.2`
`node 22`	`4.1.2`
`node 24`	`4.1.2`

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Frequently asked questions

What is the latest version of proper-lockfile?

The latest stable version of proper-lockfile is 4.1.2, published on 2021-01-25. Verified by Vigia on 2026-11-12.

How do I install the latest version of proper-lockfile?

Run npm install proper-lockfile@latest. The latest stable version is 4.1.2 (verified 2026-11-12).

Is proper-lockfile deprecated?

No. proper-lockfile is not marked as deprecated in the registry.

Which Node.js version does proper-lockfile require?

proper-lockfile 4.1.2 does not declare a Node.js version requirement.

Does proper-lockfile 4.1.2 have known vulnerabilities?

No known advisories affect proper-lockfile 4.1.2 according to the data Vigia checks.

Is proper-lockfile still maintained?

proper-lockfile published 0 stable releases in the last 12 months; the most recent was 2117 days ago. Activity: dormant.

Observed changes

No changes observed yet since Vigia started tracking this package.

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