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Package

lazy-ass

Lazy assertions without performance penalty

v2.0.3, 18 Oct 2021MITESM + CommonJSTypes: BundledTesting
$ npm install lazy-ass

Key numbers

As of 25 Sept 2026
Weekly downloads
4.1m
-25% over 12 months
Gzip bundle size
-
No Bundlephobia data
Dependencies
0
Direct, from package.json
Last release
4 years ago
v2.0.3
GitHub stars
71
5 forks
Open issues / PRs
6 / 0
Contributors
-
Commits, last 52 weeks
0

Downloads

Last week 2026-09-15 to 2026-09-21
02m4m6m8mSept 2025Mar 2026Sept 2026High 6.7m (10 Mar 2026)Low 2.8m (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.

4,056,786 downloads last week, 20,684,143 in the last month. The 12-month change of -25% compares the average of the last 4 weeks with the first 4 weeks of the series.

Releases, last 12 months
025 in total
Latest version
2.0.3, 18 Oct 20214 years ago
First published
22 May 2014
Last push to GitHub
18 Oct 20211,802 days before the snapshot
Repository archived
No
Open issues
6
Open pull requests
0
Commits, last 52 weeks
0
Dependents on npm
208

Major versions

  1. v2 first release 2.0.2, 18 Oct 2021
  2. v1 first release 1.0.0, 10 Nov 2015
  3. v0 first release 0.1.0, 22 May 2014

Recent releases

VersionPublished
2.0.318 Oct 2021
2.0.218 Oct 2021
1.6.015 Mar 2017
1.5.115 Mar 2017
1.5.03 Aug 2016
1.4.019 Feb 2016
1.3.04 Dec 2015
1.2.04 Dec 2015
1.1.020 Nov 2015
1.0.010 Nov 2015
0.6.031 Aug 2015
0.5.87 May 2015
0.5.64 May 2015
0.5.54 May 2015
Module format
ESM + CommonJSFrom package.json type, main and exports fields
TypeScript types
Bundled
Node.js engine range
> 0.8
Runtimes
-
Unpacked size (npm)
19 kB
Dependencies (0)
None
npm install lazy-ass
  • jsDelivrhttps://cdn.jsdelivr.net/npm/lazy-ass@2.0.3/
  • unpkghttps://unpkg.com/lazy-ass@2.0.3/
  • esm.shhttps://esm.sh/lazy-ass@2.0.3
Sources: npm registry, npm downloads API, GitHub API. Data fetched 25 Sept 2026.

Indexability: Indexed.