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1544 packages found
BDD/TDD assertion library for node.js and the browser. Test framework agnostic.
String validation and sanitization
tap-producing test harness for node and browsers
JavaScript test spies, stubs and mocks.
Validate XML, Parse XML, Build XML without C/C++ based libraries
test framework agnostic BDD-style assertions
Node.js test runner that lets you develop with confidence.
A little library for asserting types and values, with zero dependencies.
- type
- types
- type-check
- type-checking
- duck-typing
- arguments
- parameters
- values
- data
- contract
- assert
- check
- verify
- safe
Function argument validation for humans
- type
- types
- check
- checking
- guard
- guards
- assert
- assertion
- predicate
- predicates
- is
- validate
- validation
- utility
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A tiny invariant function
Next-gen browser and mobile automation test framework for Node.js
- webdriverio
- webdriver
- selenium
- appium
- saucelabs
- sauce
- labs
- mocha
- nodeUnit
- buster
- devtools
- puppeteer
- vows
- jasmine
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A Test-Anything-Protocol library for JavaScript
Type check values
ESLint rules for AVA
Test if a value is a function.
A light assertion library built with JSON APIs in mind.
The assert module from Node.js, for the browser.
An alternate jQuery assertion library for Chai.
Power Assert in JavaScript
Test if a value is a string.