ECMAScript extensions and shims

Node.js Streams, a user-land copy of the stream library from Node.js

The string_decoder module from Node core

Array#isArray for older browsers

Brand checking of React Elements.

Browser-friendly inheritance fully compatible with standard node.js inherits()

A querystring parser that supports nesting and arrays, with a depth limit

Node.js Buffer API, for the browser

babel's modular runtime helpers

Get and robustly cache all JS language-level intrinsics at first require time

Implementation of Function.prototype.bind

Express style path to RegExp utility

Promise based HTTP client for the browser and node.js

Robustly `.call.bind()` a function

string representations of objects in node and the browser

The `util.is*` functions introduced in Node v0.12.

Determine if the JS environment has Symbol support. Supports spec, or shams.

Store information about any JS value in a side channel. Uses WeakMap if available.

ECMAScript spec abstract operations.

Base64 encoding/decoding in pure JS

Define multiple non-enumerable properties at once. Uses `Object.defineProperty` when available; falls back to standard assignment in older engines.

A tiny (116 bytes), secure URL-friendly unique string ID generator

ES6 spec-compliant Object.assign shim. From https://github.com/es-shims/es6-shim

Determine if the JS environment has `Symbol.toStringTag` support. Supports spec, or shams.

Node's event emitter for all engines.

Which kind of Typed Array is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.

An Object.keys replacement, in case Object.keys is not available. From https://github.com/es-shims/es5-shim

ES6 spec-compliant RegExp.prototype.flags shim.

A library for deep (recursive) merging of Javascript objects

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.

Is this value a JS regex? Works cross-realm/iframe, and despite ES6 @@toStringTag

Returns an array of Typed Array names that are available in the current environment

Is this value a JS Date object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Is this value a JS String object or primitive? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Determine if the JS environment has BigInt support.

Is this value a JS Number object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Is this value a JS Boolean? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Which kind of boxed JS primitive is this?

Cooperative scheduler for the browser environment.

Object.prototype.hasOwnProperty.call shortcut

Runtime type checking for React props and similar objects.

Is this an arguments object? It's a harder question than you think.

React is a JavaScript library for building user interfaces.

The lodash method `_.debounce` exported as a module.

node's assert.deepEqual algorithm

Modern JavaScript date utility library

A tiny (239B) utility for constructing className strings conditionally.

ES2015-compliant shim for Object.is - differentiates between -0 and +0

Is this value a JS Set? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Is this value a JS Map? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Copies non-react specific statics from a child component to a parent component

An object of css properties that don't accept values with units

A simple utility for conditionally joining classNames together

Get an iterator for any JS language value. Works robustly across all environments, all versions.

A tiny invariant function

A memoization library which only remembers the latest invocation

Declarative routing for React

Lodash exported as ES modules.

Fastest deep equal comparison for React. Great for React.memo & shouldComponentUpdate. Also really fast general-purpose deep comparison.

timers module for browserify

Like lodash isEqualWith but for shallow equal.

Manage session history with JavaScript

Backwards compatibility polyfill for React class components

Topological sort of directed ascyclic graphs (like dependecy lists)

CSS for the <Component> Age. Style components your way with speed, strong typing, and flexibility.

tiny util for getting and setting deep object props safely

A custom build of Stylis

Official library to use Popper on React projects

Resolve URL pathnames using JavaScript

Are these two JavaScript values equal?

React Hook Form validation resolvers: Yup, Joi, Superstruct, Zod, Vest, Class Validator, io-ts, Nope, computed-types, TypeBox, arktype and Typanion

Build forms in React, without the tears

The lodash method `_.isArray` exported as a module.

foreach component + npm package

An onClickOutside wrapper for React components

React's ExecutionEnvironment module extracted for use in other packages & components

String convertions

Generate media query string from JSON or javascript object

Create a 'gud nuff' (not cryptographically secure) globally unique id

Smaller Polyfill for the proposed React context API

The Firebase Authenticaton component of the Firebase JS SDK.

Accessible modal dialog component for React.JS

Dynamic script loading for browser

react tooltip component

Awesome Media Queries in JavaScript

React port of slick carousel

Websocket Client & Server Library implementing the WebSocket protocol as specified in RFC 6455.

A React component for playing a variety of URLs, including file paths, YouTube, Facebook, Twitch, SoundCloud, Streamable, Vimeo, Wistia and DailyMotion

An accessible and easy tab component for ReactJS

React hooks for Chakra components

Animates a numerical value by counting to it

deep copy data

Compiles a function to compute the plural forms index for a given value

SnapSVG in CommonJS format, works out-of-the-box with Webpack

An off-canvas sidebar component with a collection of effects and styles using CSS transitions and SVG path animations