TypeScript★ 21↓ 7,850/moSep 15, 2026
npm63Moderatehealth index
JavaScript★ 58↓ 63.1K/moOct 21, 2026
Packagist62Moderatehealth index
PHP★ 1↓ 1,999/moSep 11, 2026
npm62Moderatehealth index

MetaMask/superstructA simple and composable way to validate data in JavaScript (and TypeScript). Forked by MetaMask to fix ESM compatibility.
TypeScript★ 3↓ 4.2M/moAug 27, 2026
NuGet62Moderatehealth index
C#★ 4Sep 11, 2026
Packagist62Moderatehealth index

beberlei/assertThin assertion library for use in libraries and business-model
PHP★ 2,432↓ 2M/moAug 27, 2026
Go★ 576Oct 21, 2026
crates.io56Moderatehealth index

becheran/ntestTesting framework for rust enhancing the built-in library with some useful features.
Rust★ 75↓ 1.1M/moSep 29, 2026
npm56Moderatehealth index
JavaScript★ 792↓ 125M/moOct 21, 2026
npm56Moderatehealth index
JavaScript · TypeScript★ 0↓ 32.1K/moSep 6, 2026
npm54Moderatehealth index
TypeScript★ 0↓ 4,959/moSep 14, 2026
npm53Moderatehealth index
JavaScript★ 283↓ 107M/moSep 23, 2026
Packagist50Moderatehealth index

php-testo/assertAssert plugin for the Testo testing framework (split-published from php-testo/testo)
PHP★ 0↓ 29.5K/moSep 17, 2026
npm50Moderatehealth index
JavaScript · TypeScript★ 55↓ 10.3M/moSep 23, 2026
TypeScript★ 1↓ 164.2K/moSep 23, 2026
JavaScript★ 298↓ 70.1M/moSep 15, 2026
Rust★ 1,358↓ 12.9M/moSep 17, 2026
JavaScript★ 41↓ 190M/moSep 16, 2026
JavaScript★ 33↓ 39.3M/moSep 15, 2026
TypeScript · JavaScript★ 0↓ 4,235/moOct 22, 2026
crates.io38Weakhealth index
Rust★ 0↓ 11.1K/moSep 9, 2026
NuGet34At Riskhealth index
C#★ 2Oct 22, 2026
TypeScript★ 7,130↓ 23.9M/moSep 17, 2026
JavaScript★ 0↓ 6,602/moOct 14, 2026

selyukovn/go-wm-assertSimple, type‑specific fluent assertions for Go -- initially inspired by php webmozart/assert.
Go★ 0Sep 20, 2026
NuGet31At Riskhealth index
C#★ 1Oct 13, 2026

lukeed/uvuuvu is an extremely fast and lightweight test runner for Node.js and the browser
JavaScript★ 3,028↓ 20.1M/moSep 17, 2026
Rust★ 69↓ 3.8M/moSep 18, 2026
Rust★ 665↓ 35.3M/moSep 16, 2026
TypeScript · JavaScript★ 1,863↓ 318M/moSep 17, 2026