Array#isArray for older browsers

Brand checking of React Elements.

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

Robustly `.call.bind()` a function

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

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

Cooperative scheduler for the browser environment.

Check if a protocol requires a certain port number to be added to an URL.

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.

ES proposal-spec-compliant Object.fromEntries shim.

Small footprint URL parser that works seamlessly across Node.js and browser environments

Querystringify - Small, simple but powerful query string parser.

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

A react component toolset for managing animations

tiny modular DOM lib for ie9+

A tiny invariant function

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

Declarative routing for React

Predictable state container for JavaScript apps

Declarative routing for React web applications

Manage session history with JavaScript

Backwards compatibility polyfill for React class components

Official library to use Popper on React projects

A kickass library to manage your poppers

Polyfills the ResizeObserver API and supports box size options from the latest spec

Functional programming in TypeScript

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

An enterprise-class UI design language and React components implementation

Smooth Scroll behavior polyfill

React Bootstrap components