The React Framework

RFC4122 (v1, v4, and v5) UUIDs

Array#isArray for older browsers

Brand checking of React Elements.

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

HTTP server cookie parsing and serialization

Robustly `.call.bind()` a function

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

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.

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

Node's event emitter for all engines.

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.

Standard library

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

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

Object.prototype.hasOwnProperty.call shortcut

Cooperative scheduler for the browser environment.

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.

React package for working with the DOM.

Implements performance.now (based on process.hrtime).

node's assert.deepEqual algorithm

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

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

A simple utility for conditionally joining classNames together

Safely and quickly serialize JavaScript objects

Parse and stringify URL query strings

ES2017 spec-compliant shim for `Object.getOwnPropertyDescriptors` that works in ES5.

elegant & feature rich browser / node HTTP with a fluent API

timers module for browserify

Node's querystring module for all engines. (ES3 compat fork)

Like lodash isEqualWith but for shallow equal.

Manage session history with JavaScript

requestAnimationFrame polyfill for node and the browser

Simple dependency graph.

Resolve URL pathnames using JavaScript

Are these two JavaScript values equal?

Minimal GraphQL client supporting Node and browsers for scripts or simple apps

Formats ICU Message strings with number, date, plural, and select placeholders to create localized messages.

_NOTE: This is specifically tailored for Firebase JS SDK usage, if you are not a member of the Firebase team, please avoid using this package_

Functional programming in TypeScript

useMemo and useCallback but with a stable cache

Create components whose prop changes map to a global side effect

A document head manager for React

Globals and shared modules

Animated component props for React

Parses ICU Message strings into an AST via JavaScript.

Saga middleware for Redux to handle Side Effects

Polyfill the ECMA-402 Intl API (except collation)

A React hook for changing properties or visibility of a component based on css media query

React Bootstrap components

React code splitting made easy.

A simple utility for creating an object with values equal to its keys. Identical to react/lib/keyMirror

Javascript library for Amplitude Analytics

JavaScript client for Sentry

A React library for hCaptcha

Validate your forms, frontend, without writing a single line of javascript!

A library to edit lottie-web animations dynamically