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837 packages found
BDD/TDD assertion library for node.js and the browser. Test framework agnostic.
simple, flexible, fun test framework
Node.js test runner that lets you develop with confidence.
Error constructor for test and validation frameworks that implements standardized AssertionError specification.
Type check values
DOM assertions for the Chai assertion library using vanilla JavaScript
Function argument validation for humans
- type
- types
- check
- checking
- guard
- guards
- assert
- assertion
- predicate
- predicates
- is
- validate
- validation
- utility
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Automated browser testing for the modern web development stack.
- automated
- functional
- browser
- browsers
- website
- webapp
- testing
- automation
- test
- runner
- tdd
- assert
- assertion
- QA
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Standard assertion utilities.
- stdlib
- stdassert
- assertion
- assert
- expectation
- expect
- utilities
- utility
- utils
- util
- test
- check
- validate
- validation
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Strong Dynamically Typed Object Modeling for JavaScript
- typed
- types
- typing
- type-checking
- dynamic
- strong
- model
- definition
- object
- assertion
- inheritance
- composition
- structures
- proxy
🐷 Poku makes testing easy for Node.js, Bun & Deno at the same time.
- 🐷
- test
- runner
- assert
- assertion
- testing
- bun
- deno
- cli
- concurrent
- concurrency
- parallelism
- parallel
- sequential
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Test if a double-precision floating-point numeric value is NaN.
- stdlib
- stdmath
- assertion
- assert
- utilities
- utility
- utils
- util
- math
- mathematics
- ieee754
- floating-point
- float
- number
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Test if an object has a specified property.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- object
- obj
- has
- hasown
- hasownproperty
- property
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Test if a value is a function.
Test if a value is a plain object.
Test if a value is a string.
Test if a value is a boolean.
Santi's Assertion Library: Quick and reliable assertions!
Small footprint library that helps with typescript assertions.
Test if a value is a number.