npm · npm:once

once active

Run a function exactly one time

The latest stable version of once is 1.4.0, published on 2016-09-06. Verified by Vigia on 2026-11-12.

Latest stable version	1.4.0
Published	2016-09-06 21:11:09 UTC
Install	`npm install once@latest`
Requires (engines)	none declared
Peer dependencies	—
Dist-tags	`latest: 1.4.0`
License	ISC
Advisories on latest version	none known
Last verified	2026-11-12 13:45:06 UTC
Sources	api.deps.dev, registry.npmjs.org, registry.npmjs.org

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Maintenance

Activity	dormant
Last stable release	2016-09-06 21:11:09 UTC · 3719 days ago
Stable releases in the last 12 months	0
Published versions	7

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

Version history

Version	Published
`1.4.0`	2016-09-06 21:11:09 UTC
`1.3.3`	2015-11-20 21:45:14 UTC
`1.3.2`	2015-05-04 23:09:54 UTC
`1.3.1`	2014-09-18 23:05:04 UTC
`1.3.0`	2013-10-24 06:27:26 UTC
`1.2.0`	2013-08-12 02:55:21 UTC
`1.1.1`	2012-08-14 07:25:58 UTC

Showing the 7 most recent of 7 versions. JSON

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Frequently asked questions

What is the latest version of once?

The latest stable version of once is 1.4.0, published on 2016-09-06. Verified by Vigia on 2026-11-12.

How do I install the latest version of once?

Run npm install once@latest. The latest stable version is 1.4.0 (verified 2026-11-12).

Is once deprecated?

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

Which Node.js version does once require?

once 1.4.0 does not declare a Node.js version requirement.

Does once 1.4.0 have known vulnerabilities?

No known advisories affect once 1.4.0 according to the data Vigia checks.

Is once still maintained?

once published 0 stable releases in the last 12 months; the most recent was 3719 days ago. Activity: dormant.

Observed changes

No changes observed yet since Vigia started tracking this package.

Related packages

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