npm · npm:is2

is2 active

A type checking library where each exported function returns either true or false and does not throw. Also added tests.

The latest stable version of is2 is 2.0.9, published on 2022-09-08. Verified by Vigia on 2026-11-12.

Latest stable version	2.0.9
Published	2022-09-08 15:40:39 UTC
Install	`npm install is2@latest`
Requires (engines)	`{"node":">=v0.10.0"}`
Peer dependencies	—
Dist-tags	`latest: 2.0.9`
License	MIT
Advisories on latest version	none known
Last verified	2026-11-12 15:56:47 UTC
Sources	api.deps.dev, registry.npmjs.org, registry.npmjs.org

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Maintenance

Activity	dormant
Last stable release	2022-09-08 15:40:39 UTC · 1526 days ago
Stable releases in the last 12 months	0
Published versions	30

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

Version history

Version	Published
`2.0.9`	2022-09-08 15:40:39 UTC
`2.0.8`	2022-09-08 15:27:11 UTC
`2.0.7`	2021-05-08 18:37:57 UTC
`2.0.6`	2020-08-14 17:38:05 UTC
`2.0.4`	2019-05-15 17:08:26 UTC
`2.0.1`	2018-02-26 23:47:21 UTC
`2.0.0`	2018-02-20 19:41:25 UTC
`1.0.9`	2016-07-15 23:07:57 UTC
`1.0.8`	2016-06-10 21:02:54 UTC
`1.0.7`	2016-06-09 23:09:10 UTC
`1.0.6`	2016-06-09 21:56:59 UTC
`1.0.5`	2016-06-08 15:46:43 UTC
`1.0.4`	2016-04-28 23:18:20 UTC
`1.0.3`	2016-04-24 21:34:09 UTC
`1.0.2`	2015-12-04 22:52:20 UTC
`1.0.1`	2015-10-19 18:38:57 UTC
`1.0.0`	2015-10-13 17:06:01 UTC
`0.0.13`	2014-02-15 20:16:01 UTC
`0.0.12`	2014-01-26 23:07:09 UTC
`0.0.11`	2013-12-12 01:00:47 UTC

Showing the 20 most recent of 30 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`	`2.0.9`
`node 18`	`2.0.9`
`node 20`	`2.0.9`
`node 22`	`2.0.9`
`node 24`	`2.0.9`

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Frequently asked questions

What is the latest version of is2?

The latest stable version of is2 is 2.0.9, published on 2022-09-08. Verified by Vigia on 2026-11-12.

How do I install the latest version of is2?

Run npm install is2@latest. The latest stable version is 2.0.9 (verified 2026-11-12).

Is is2 deprecated?

No. is2 is not marked as deprecated in the registry.

Which Node.js version does is2 require?

is2 2.0.9 declares this requirement: {"node":">=v0.10.0"}.

Does is2 2.0.9 have known vulnerabilities?

No known advisories affect is2 2.0.9 according to the data Vigia checks.

Is is2 still maintained?

is2 published 0 stable releases in the last 12 months; the most recent was 1526 days ago. Activity: dormant.

Observed changes

No changes observed yet since Vigia started tracking this package.

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