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#assert

Every repository in the public record carrying this tag — from its GitHub topics or the keywords its package registries publish. Health is measured under the same versioned methodology as the rest of the record.

20 records
Tagged “assert”Ranked by health index
npm
83Goodhealth index
tinymce/tinymce
The world's #1 JavaScript library for rich text editing. Available for React, Vue and Angular
TypeScript★ 16.3K↓ 49.1K/moJul 22, 2026
Custom licenseJul 22, 2026 · metrics 1.13.0
npm
80Goodhealth index
chaijs/chai
BDD / TDD assertion framework for node.js and the browser that can be paired with any testing framework.
JavaScript★ 8,267↓ 376M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
Packagist
70Goodhealth index
phpstan/phpstan-webmozart-assert
PHPStan extension for webmozart/assert
PHP★ 184↓ 668K/moJul 13, 2026
MITJul 13, 2026 · metrics 1.13.0
crates.io
68Moderatehealth index
assert-rs/snapbox
Snapshot testing for a herd of CLI tests
Rust★ 181↓ 2.4M/moJul 22, 2026
Apache-2.0Jul 22, 2026 · metrics 1.13.0
crates.io
66Moderatehealth index
assert-rs/assert_fs
Filesystem fixtures and assertions.
Rust★ 125↓ 902.9K/moJul 15, 2026
Apache-2.0Jul 15, 2026 · metrics 1.13.0
Packagist
66Moderatehealth index
phpstan/phpstan-beberlei-assert
PHPStan extension for beberlei/assert
PHP★ 43↓ 104.9K/moJul 14, 2026
MITJul 14, 2026 · metrics 1.13.0
npm
65Moderatehealth index
mmkal/expect-type
Compile-time tests for types. Useful to make sure types don't regress into being overly-permissive as changes go in over time.
TypeScript★ 563↓ 265M/moJul 22, 2026
Custom licenseJul 22, 2026 · metrics 1.13.0
npm
65Moderatehealth index
sindresorhus/is
Type check values
TypeScript★ 1,790↓ 204M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
PyPI
63Moderatehealth index
Solganis/assertpy2
Fluent, fully-typed assertion library for Python: type-narrowing assertions, contract testing, composable matchers, and structural matching.
Python★ 4↓ 6,017/moJul 19, 2026
BSD-3-ClauseJul 19, 2026 · metrics 1.13.0
npm
63Moderatehealth index
marekh19/narrowland
A lightweight TypeScript library providing type-safe assertions, type guards, and error handling utilities.
TypeScript★ 17↓ 2,202/moJul 15, 2026
MITJul 15, 2026 · metrics 1.13.0
npm
60Moderatehealth index
3axap4eHko/ascertain
0-Deps, simple, fast, for browser and node js object schema validator
TypeScript★ 0↓ 28.7K/moJul 15, 2026
MITJul 15, 2026 · metrics 1.13.0
Packagist
60Moderatehealth index
beberlei/assert
Thin assertion library for use in libraries and business-model
PHP★ 2,429↓ 1.7M/moJul 22, 2026
Custom licenseJul 22, 2026 · metrics 1.13.0
npm
59Moderatehealth index
MetaMask/superstruct
A simple and composable way to validate data in JavaScript (and TypeScript). Forked by MetaMask to fix ESM compatibility.
TypeScript★ 3↓ 3.9M/moJul 19, 2026
MITJul 19, 2026 · metrics 1.13.0
NuGet
59Moderatehealth index
Sauceforge/Saucery
The SauceLabs DesiredOption factory. Makes SauceLabs easy.
C#★ 4Jul 19, 2026
MITJul 19, 2026 · metrics 1.13.0
Packagist
58Moderatehealth index
123inkt/utils
A library for small and convenient utility methods
PHP★ 1↓ 2,334/moJul 18, 2026
MITJul 18, 2026 · metrics 1.13.0
PyPI
44At riskhealth index
assertpy/assertpy
Simple assertion library for unit testing in python with a fluent API
Python★ 529↓ 830.5K/moJul 21, 2026
BSD-3-ClauseJul 21, 2026 · metrics 1.13.0
npm
42At riskhealth index
wooorm/devlop
do things in development and nothing otherwise
JavaScript★ 41↓ 162M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
crates.io
40At riskhealth index
frozenlib/assert-call
A tool for testing that ensures code parts are called as expected
Rust★ 0↓ 4,862/moJul 17, 2026
Apache-2.0Jul 17, 2026 · metrics 1.13.0
npm
38At riskhealth index
NaturalIntelligence/fast-xml-parser
Validate XML, Parse XML and Build XML rapidly without C/C++ based libraries and no callback.
JavaScript★ 3,118↓ 330M/moJul 19, 2026
MITJul 19, 2026 · metrics 1.13.0
Packagist
35At riskhealth index
webmozarts/assert
Assertions to validate method input/output with nice error messages.
PHP★ 7,651↓ 12.3M/moJul 20, 2026
MITJul 20, 2026 · metrics 1.13.0