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JS
Package

is-identifier

Check if a string is a valid JavaScript identifier

v1.1.0, 5 Jul 2026MITESM onlyTypes: Bundled
$ npm install is-identifier
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Key numbers

As of 25 Sept 2026
Weekly downloads
1.9m
+1344% over 12 months
Gzip bundle size
-
No Bundlephobia data
Dependencies
2
Direct, from package.json
Last release
2 months ago
v1.1.0
GitHub stars
27
2 forks
Open issues / PRs
0 / 0
Contributors
-
Commits, last 52 weeks
2

Downloads

Last week 2026-09-15 to 2026-09-21
01m2m3mSept 2025Mar 2026Sept 2026High 2.4m (8 Sept 2026)Low 100k (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.

1,905,721 downloads last week, 8,783,030 in the last month. The 12-month change of +1344% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months
13 in total
Latest version
1.1.0, 5 Jul 20262 months ago
First published
5 May 2024
Last push to GitHub
5 Jul 202682 days before the snapshot
Repository archived
No
Open issues
0
Open pull requests
0
Commits, last 52 weeks
2
Dependents on npm
5

Major versions

  1. v1 first release 1.0.0, 5 May 2024

Recent releases

VersionPublished
1.1.05 Jul 2026
1.0.112 Jul 2024
1.0.05 May 2024

Compatibility

Module format
ESM onlyFrom package.json type, main and exports fields
TypeScript types
Bundled
Node.js engine range
>=18
Runtimes
-
Unpacked size (npm)
5.0 kB
Dependencies (2)
super-regexidentifier-regex

Install

npm install is-identifier

CDN

  • jsDelivrhttps://cdn.jsdelivr.net/npm/is-identifier@1.1.0/
  • unpkghttps://unpkg.com/is-identifier@1.1.0/
  • esm.shhttps://esm.sh/is-identifier@1.1.0
Sources: npm registry, npm downloads API, GitHub API. Data fetched 25 Sept 2026.

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