`Object.defineProperty`, but not IE 8's broken one.
A robust, ES3 compatible, "has own property" predicate.
Does the environment have full property descriptor support? Handles IE 8's broken defineProperty/gOPD.
Determine if the JS environment has BigInt support.
ES6 spec-compliant Object.assign shim. From https://github.com/es-shims/es6-shim
Give a regex, get a robust predicate function that tests it against a string.
HTTP status utility
Terminal string styling done right
Set a function's length property
ES2019 spec-compliant String.prototype.trimStart shim.
An ES2019 spec-compliant `Array.prototype.flat` shim/polyfill/replacement that works as far down as ES3.
ES spec-like internal slots
An ES7/ES2016 spec-compliant `Array.prototype.includes` shim/polyfill/replacement that works as far down as ES3.
ES2017 spec-compliant Object.values shim.
Utility functions for working with TypeScript's API. Successor to the wonderful tsutils. 🛠️️
Custom jest matchers to test the state of the DOM
Is this value a JS Number object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Is this value a JS WeakRef? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Is this value a JS FinalizationRegistry? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
A lightweight carousel library with fluid motion and great swipe precision
Is this value a JS regex? Works cross-realm/iframe, and despite ES6 @@toStringTag
Is this value a JS SharedArrayBuffer?
Pure random number generator written in TypeScript
ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.