ES Math-related intrinsics and helpers, robustly cached.
An ES7/ES2016 spec-compliant `Array.prototype.includes` shim/polyfill/replacement that works as far down as ES3.
ES2017 spec-compliant Object.values shim.
Is this value a JS regex? Works cross-realm/iframe, and despite ES6 @@toStringTag
Is this value a JS Boolean? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
TypeScript-first schema declaration and validation library with static type inference
Is this value negative zero? === will lie to you
Improved typeof detection for node.js and the browser.
Simple and complete React DOM testing utilities that encourage good testing practices.
Determine if the JS environment has BigInt support.
ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.
An ESnext spec-compliant `Array.prototype.findLast` shim/polyfill/replacement that works as far down as ES3.
Helper functions for V8 coverage files.
ECMAScript spec-compliant polyfill/shim for `globalThis`
Unbox a boxed JS primitive value.
ES2017 spec-compliant Object.entries shim.
Determine if a value is an ES6 Symbol or not.
An ESnext spec-compliant `Array.prototype.findLastIndex` shim/polyfill/replacement that works as far down as ES3.
Helper package to shim a method into `Array.prototype[Symbol.unscopables]`
Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js
Is this value a JS Date object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
ES proposal-spec-compliant Object.fromEntries shim.
This plugin adds `TypeScript` support to `eslint-plugin-import`
A collection of essential TypeScript types