Give a regex, get a robust predicate function that tests it against a string.
assert with status codes
The assert module from Node.js, for the browser.
uvu is an extremely fast and lightweight test runner for Node.js and the browser
minimalistic-assert ===
Simple pub/sub messaging for the web
Return a function which tests if every element in an array passes a test condition.
Featherweight assert module
Parses, serializes, and manipulates MIME types, according to the WHATWG MIME Sniffing Standard
Synchronous validation of a path existing either as a file or as a directory.
Make espower-lodaer config file unnecessary.
correct invalid SPDX expressions
A robust, ES3 compatible, "has own property" predicate.
Extra assertions on top of node's assert module
Is this value a JS SharedArrayBuffer?
Is this value a JS ArrayBuffer?
Which kind of boxed JS primitive is this?
What is the type of this builtin JS value?
Is this value a JS Typed Array? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.
`Object.getOwnPropertyDescriptor`, but accounts for IE's broken implementation.
Power Assert in JavaScript
Is this specifier a node.js core module?
Assertion module for Japa
Standard assertion utilities.
Assert with Rack::Test
Assert-methods (sugar) and a tiny DSL to facilitate testing of rack apps with Rack::Test.
Save time and energy by writing short effecient obvious assertions/expectations with rack/test