An ES2019 spec-compliant `Array.prototype.flat` shim/polyfill/replacement that works as far down as ES3.
Simple and complete React DOM testing utilities that encourage good testing practices.
Simple and complete DOM testing utilities that encourage good testing practices.
Is this value negative zero? === will lie to you
Fast, disk space efficient package manager
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.
TypeScript-first schema declaration and validation library with static type inference
ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.
ES proposal-spec-compliant Object.fromEntries shim.
Is this value a JS Boolean? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Determine if a value is an ES6 Symbol or not.
Determine if the JS environment has BigInt support.
Is this value a JS Date object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
ECMAScript spec-compliant polyfill/shim for `globalThis`
Unbox a boxed JS primitive value.
Is this value a JS String object or primitive? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
ES2017 spec-compliant Object.entries shim.
Helper package to shim a method into `Array.prototype[Symbol.unscopables]`
An ESnext spec-compliant `Array.prototype.findLastIndex` shim/polyfill/replacement that works as far down as ES3.
This plugin adds `TypeScript` support to `eslint-plugin-import`
Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js
Is this value an ES BigInt?