Custom jest matchers to test the state of the DOM
Is this an arguments object? It's a harder question than you think.
Validate XML, Parse XML, Build XML without C/C++ based libraries
A helper to optimistically set Symbol.toStringTag, when possible.
core-js compat
Unified plugin system for build tools
micromark factory to parse labels (found in media, definitions)
The `postinstall` script helper for handling native bindings in legacy `npm` versions
ES proposal-spec-compliant Object.fromEntries shim.
An ESnext spec-compliant `Array.prototype.toSorted` shim/polyfill/replacement that works as far down as ES3.
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.
ECMAScript spec-compliant polyfill/shim for `globalThis`
mdast utility to check if a node is phrasing content
An Esprima-compatible JavaScript parser built on Acorn
Standard Subresource Integrity library -- parses, serializes, generates, and verifies integrity metadata according to the SRI spec.
TypeScript definitions for react-dom
A function that returns the normally hidden `AsyncFunction` constructor
Is this value a JS Map? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
TypeScript definitions for qs
Is this value a JS DataView? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.
An ES2015 mostly-spec-compliant `Reflect.getPrototypeOf` sham/polyfill/replacement that works in as many engines as possible
Convert a string of words to a JavaScript identifier
small commonmark compliant markdown parser with positional info and concrete tokens
A simple list of possible Typed Array names.