Error constructor for test and validation frameworks that implements standardized AssertionError specification.
Format errors to display a diff between the actual and expected
Allow parsing of the module assertion attributes in the import statement
Support for import assertions in acorn
Pass two numbers, get a regex-compatible source string for matching ranges. Validated against more than 2.78 million test assertions.
Extra assertions on top of node's assert module
minimalistic-assert ===
String validation and sanitization
Featherweight assert module
[](https://github.com/mmkal/expect-type/actions/workflows/ci.yml)  [
A little library for asserting types and values, with zero dependencies.
typesafe assertion library for TypeScript 3.7+
Yet another JavaScript assertion/invariant library.
assertion renderer for power-assert context
Helpers for asserting that a JavaScript environment supports certain features necessary for the operation of the Solana JavaScript SDK
Type assertions aka less-broken `typeof`
TypeScript definitions for http-assert
Adaptation of react-addons-shallow-compare, for independent usage
Useful utilities for working with Uint8Array (and Buffer)
Helper function for exhaustive checks of discriminated unions in TypeScript
Next-gen browser and mobile automation test framework for Node.js
Extends Chai with assertions about promises.
JavaScript Testing utilities for React
WebdriverIO Assertion Library
JavaScript Testing utilities for React
Extends Chai with assertions for the Sinon.JS mocking framework.
A tiny javascript type testing tool
Disallow type assertions in TypeScript code