Skip to content
JS
Package

flags

Flags SDK by Vercel - The feature flags toolkit for Next.js and SvelteKit

v4.3.1, 9 Sept 2026MITESM + CommonJSTypes: NoneSvelteReact
$ npm install flags

Key numbers

As of 25 Sept 2026
Weekly downloads
826.5k
+230% over 12 months
Gzip bundle size
-
No Bundlephobia data
Dependencies
2
Direct, from package.json
Last release
15 days ago
v4.3.1
GitHub stars
-
Open issues / PRs
- / -
Contributors
-
Commits, last 52 weeks
-

Downloads

Last week 2026-09-15 to 2026-09-21
0500k1m1.5mSept 2025Mar 2026Sept 2026High 1.2m (18 Aug 2026)Low 109.2k (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.

826,546 downloads last week, 3,902,771 in the last month. The 12-month change of +230% compares the average of the last 4 weeks with the first 4 weeks of the series.

Releases, last 12 months
1426 in total
Latest version
4.3.1, 9 Sept 202615 days ago
First published
4 Apr 2011
Last push to GitHub
-
Repository archived
-
Open issues
-
Open pull requests
-
Commits, last 52 weeks
-
Dependents on npm
-

Major versions

  1. v4 first release 4.0.0, 2 May 2025
  2. v3 first release 3.1.1, 20 Feb 2025
  3. v0 first release 0.1.0, 4 Apr 2011

Recent releases

VersionPublished
4.3.19 Sept 2026
4.3.04 Aug 2026
4.2.429 Jul 2026
4.2.324 Jul 2026
4.2.224 Jul 2026
4.2.120 Jul 2026
4.2.017 Jun 2026
4.1.116 Jun 2026
4.1.05 Jun 2026
4.0.63 Apr 2026
4.0.512 Mar 2026
4.0.49 Mar 2026
4.0.311 Feb 2026
4.0.26 Nov 2025
Module format
ESM + CommonJSFrom package.json type, main and exports fields
TypeScript types
None
Node.js engine range
Not declared
Runtimes
-
Unpacked size (npm)
546 kB
Dependencies (2)
jose@edge-runtime/cookies
Peer dependencies (4)
nextreactreact-dom@opentelemetry/api
npm install flags
  • jsDelivrhttps://cdn.jsdelivr.net/npm/flags@4.3.1/
  • unpkghttps://unpkg.com/flags@4.3.1/
  • esm.shhttps://esm.sh/flags@4.3.1
Sources: npm registry, npm downloads API. Data fetched 25 Sept 2026.

Indexability: Not indexed (discovery only): GitHub data not fetched yet.