Brand checking of React Elements.

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

Promise based HTTP client for the browser and node.js

Standard library

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

Object.prototype.hasOwnProperty.call shortcut

Implementation of Function.prototype.bind

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

Robustly `.call.bind()` a function

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

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

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

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

ES6 spec-compliant RegExp.prototype.flags shim.

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

Runtime type checking for React props and similar objects.

Cooperative scheduler for the browser environment.

node's assert.deepEqual algorithm

React is a JavaScript library for building user interfaces.

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

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

Bare bones Promises/A+ implementation

A simple utility for conditionally joining classNames together

implementation of crypto for the browser

Configuration and scripts for Create React App.

turf helpers module

A tiny and fast selection algorithm in JavaScript.

The smallest and simplest JavaScript priority queue

High-performance 2D spatial index for rectangles (based on R*-tree with bulk loading and bulk insertion algorithms)

scroll dom node into view automatically

Accessible, extensible, Autocomplete for React.js