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Package

delaunator

An incredibly fast JavaScript library for Delaunay triangulation of 2D points

v5.1.0, 23 Mar 2026ISCESM onlyTypes: Bundled
$ npm install delaunator
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Key numbers

As of 25 Sept 2026
Weekly downloads
19m
+313% over 12 months
Gzip bundle size
-
No Bundlephobia data
Dependencies
1
Direct, from package.json
Last release
6 months ago
v5.1.0
GitHub stars
2.6k
152 forks
Open issues / PRs
5 / 0
Contributors
-
Commits, last 52 weeks
6

Downloads

Last week 2026-09-15 to 2026-09-21
010m20m30mSept 2025Mar 2026Sept 2026High 25.7m (25 Aug 2026)Low 3.4m (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.

19,042,912 downloads last week, 95,339,128 in the last month. The 12-month change of +313% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months
120 in total
Latest version
5.1.0, 23 Mar 20266 months ago
First published
16 May 2017
Last push to GitHub
24 Jun 202692 days before the snapshot
Repository archived
No
Open issues
5
Open pull requests
0
Commits, last 52 weeks
6
Dependents on npm
117

Major versions

  1. v5 first release 5.0.0, 26 Mar 2021
  2. v4 first release 4.0.0, 19 Jun 2019
  3. v3 first release 3.0.0, 10 Sept 2018
  4. v2 first release 2.0.0, 23 Mar 2018
  5. v1 first release 1.0.0, 16 May 2017

Recent releases

VersionPublished
5.1.023 Mar 2026
5.0.124 Jan 2024
5.0.026 Mar 2021
4.0.130 Aug 2019
4.0.019 Jun 2019
3.0.226 Sept 2018
3.0.110 Sept 2018
3.0.010 Sept 2018
2.0.55 Sept 2018
2.0.43 Sept 2018
2.0.331 Aug 2018
2.0.228 Aug 2018
2.0.127 Aug 2018
2.0.023 Mar 2018

Compatibility

Module format
ESM onlyFrom package.json type, main and exports fields
TypeScript types
Bundled
Node.js engine range
Not declared
Runtimes
-
Unpacked size (npm)
65 kB
Dependencies (1)
robust-predicates

Install

npm install delaunator

CDN

jsDelivr: 3.5m requests in 30 days
  • jsDelivrhttps://cdn.jsdelivr.net/npm/delaunator@5.1.0/
  • unpkghttps://unpkg.com/delaunator@5.1.0/
  • esm.shhttps://esm.sh/delaunator@5.1.0
Sources: npm registry, npm downloads API, GitHub API, jsDelivr. Data fetched 25 Sept 2026.

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