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is-plain-object

Returns true if an object was created by the `Object` constructor, or Object.create(null).

v5.1.0, 21 Aug 2026MITESM + CommonJSTypes: Bundled
$ npm install is-plain-object
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Key numbers

As of 25 Sept 2026
Weekly downloads
57.8m
+31% over 12 months
Gzip bundle size
-
No Bundlephobia data
Dependencies
0
Direct, from package.json
Last release
1 month ago
v5.1.0
GitHub stars
156
35 forks
Open issues / PRs
1 / 1
Contributors
9
Commits, last 52 weeks
8

Downloads

Last week 2026-09-15 to 2026-09-21
020m40m60m80mSept 2025Mar 2026Sept 2026High 77.9m (25 Aug 2026)Low 25.4m (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.

57,811,878 downloads last week, 277,188,458 in the last month. The 12-month change of +31% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months
114 in total
Latest version
5.1.0, 21 Aug 20261 month ago
First published
21 Sept 2014
Last push to GitHub
21 Aug 202634 days before the snapshot
Repository archived
No
Open issues
1
Open pull requests
1
Commits, last 52 weeks
8
Dependents on npm
2,448

Major versions

  1. v5 first release 5.0.0, 9 Sept 2020
  2. v4 first release 4.0.0, 21 Jul 2020
  3. v3 first release 3.0.0, 30 Apr 2019
  4. v2 first release 2.0.0, 29 Apr 2015
  5. v1 first release 1.0.0, 25 Feb 2015
  6. v0 first release 0.1.0, 21 Sept 2014

Recent releases

VersionPublished
5.1.021 Aug 2026
5.0.09 Sept 2020
4.1.124 Jul 2020
4.1.021 Jul 2020
4.0.021 Jul 2020
3.0.127 Jun 2020
3.0.030 Apr 2019
2.0.411 Jul 2017
2.0.330 May 2017
2.0.227 May 2017
2.0.128 May 2015
2.0.029 Apr 2015
1.0.025 Feb 2015
0.1.021 Sept 2014

Compatibility

Module format
ESM + CommonJSFrom package.json type, main and exports fields
TypeScript types
Bundled
Node.js engine range
>=0.10.0
Runtimes
-
Unpacked size (npm)
6.6 kB
Dependencies (0)
None

Install

npm install is-plain-object

CDN

jsDelivr: 54.3k requests in 30 days
  • jsDelivrhttps://cdn.jsdelivr.net/npm/is-plain-object@5.1.0/
  • unpkghttps://unpkg.com/is-plain-object@5.1.0/
  • esm.shhttps://esm.sh/is-plain-object@5.1.0
Sources: npm registry, npm downloads API, GitHub API, jsDelivr. Data fetched 25 Sept 2026.

Indexability: Not indexed (discovery only): no category.