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Package

flatted

A super light and fast circular JSON parser.

v3.4.4, 30 Jul 2026ISCESM onlyTypes: BundledParsers and serialisers
$ npm install flatted

Key numbers

As of 25 Sept 2026
Weekly downloads
118m
+131% over 12 months
Gzip bundle size
-
No Bundlephobia data
Dependencies
0
Direct, from package.json
Last release
1 month ago
v3.4.4
GitHub stars
1.2k
99 forks
Open issues / PRs
0 / 4
Contributors
14
Commits, last 52 weeks
40

Downloads

Last week 2026-09-15 to 2026-09-21
050m100m150m200mSept 2025Mar 2026Sept 2026High 156.5m (18 Aug 2026)Low 34.7m (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.

117,985,598 downloads last week, 564,829,338 in the last month. The 12-month change of +131% compares the average of the last 4 weeks with the first 4 weeks of the series.

Releases, last 12 months
644 in total
Latest version
3.4.4, 30 Jul 20261 month ago
First published
26 Apr 2018
Last push to GitHub
30 Jul 202656 days before the snapshot
Repository archived
No
Open issues
0
Open pull requests
4
Commits, last 52 weeks
40
Dependents on npm
2,207

Major versions

  1. v3 first release 3.0.0, 26 May 2020
  2. v2 first release 2.0.0, 22 Oct 2018
  3. v1 first release 1.0.0, 18 Sept 2018
  4. v0 first release 0.1.0, 26 Apr 2018

Recent releases

VersionPublished
3.4.430 Jul 2026
3.4.322 Jul 2026
3.4.217 Mar 2026
3.4.19 Mar 2026
3.4.08 Mar 2026
3.3.42 Mar 2026
3.3.318 Feb 2025
3.3.218 Nov 2024
3.3.121 Feb 2024
3.3.020 Feb 2024
3.2.1320 Feb 2024
3.2.1220 Feb 2024
3.2.1120 Feb 2024
3.2.1020 Feb 2024
Module format
ESM onlyFrom package.json type, main and exports fields
TypeScript types
Bundled
Node.js engine range
Not declared
Runtimes
-
Unpacked size (npm)
38 kB
Dependencies (0)
None
npm install flatted

CDN

jsDelivr: 225.6k requests in 30 days
  • jsDelivrhttps://cdn.jsdelivr.net/npm/flatted@3.4.4/
  • unpkghttps://unpkg.com/flatted@3.4.4/
  • esm.shhttps://esm.sh/flatted@3.4.4
Sources: npm registry, npm downloads API, GitHub API, jsDelivr. Data fetched 25 Sept 2026.

Indexability: Indexed.