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sweph-wasm

High-precision Swiss Ephemeris WebAssembly bindings for TypeScript — comprehensive astronomical calculations including planetary positions, house systems, eclipses, fixed stars, and astrological computations with modern JS/TS support.

v2.6.9AGPL-3.0-or-laterESM + CommonJSTypes: BundledTypeScript tooling
$ npm install sweph-wasm

Key numbers

As of 25 Sept 2026
Weekly downloads
2.6k
+826% over 12 months
Gzip bundle size
-
No Bundlephobia data
Dependencies
2
Direct, from package.json
Last release
-
v2.6.9
GitHub stars
11
6 forks
Open issues / PRs
2 / 0
Contributors
-
Commits, last 52 weeks
1

Downloads

Last week 2026-09-15 to 2026-09-21
01k2k3k4kSept 2025Mar 2026Sept 2026High 3.8k (28 Jul 2026)Low 102 (23 Sept 2025)
Weekly npm downloads, one point per week, weeks starting 23 Sept 2025 to 15 Sept 2026. The y axis starts at zero.

2,639 downloads last week, 9,205 in the last month. The 12-month change of +826% compares the average of the last 4 weeks with the first 4 weeks of the series.

Releases, last 12 months
-
Latest version
2.6.9
First published
-
Last push to GitHub
19 Jun 202697 days before the snapshot
Repository archived
No
Open issues
2
Open pull requests
0
Commits, last 52 weeks
1
Dependents on npm
-

Major versions

-

Recent releases

-

Module format
ESM + CommonJSFrom package.json type, main and exports fields
TypeScript types
Bundled
Node.js engine range
>=22
Runtimes
-
Unpacked size (npm)
105.5 MB
Dependencies (2)
wasp-libfixed-len-array
npm install sweph-wasm

CDN

jsDelivr: 80k requests in 30 days
  • jsDelivrhttps://cdn.jsdelivr.net/npm/sweph-wasm@2.6.9/
  • unpkghttps://unpkg.com/sweph-wasm@2.6.9/
  • esm.shhttps://esm.sh/sweph-wasm@2.6.9
Sources: npm registry, npm downloads API, GitHub API, jsDelivr. Data fetched 25 Sept 2026.

Indexability: Not indexed (discovery only): downloads_week 2639 < 10000.