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()

Node.js Buffer API, for the browser

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.

Does the environment have full property descriptor support? Handles IE 8's broken defineProperty/gOPD.

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.

Is this JS value callable? Works with Functions and GeneratorFunctions, despite ES6 @@toStringTag.

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

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.

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

Node.js's util module for all engines

A better forEach

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.

Determine if a function is a native generator function.

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

minimalistic-assert ===

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

The assert module from Node.js, for the browser.

Streamable SHA hashes in pure javascript

A simple common HTTP client specifically for Google APIs and services.

A tiny invariant function

ASN.1 encoder and decoder

abstract base class for hash-streams

EC cryptography

Various hash functions that could be run by both browser and node

Deterministic random bit generator (hmac)

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

DES implementation

node style md5 on pure JavaScript

This library provides the functionality of PBKDF2 with the ability to use any supported hashing algorithm returned from crypto.getHashes()

utility library for parsing asn1 files for use with browserify-sign.

abstract base class for crypto-streams

adds node crypto signing for browsers

aes, for browserify

The insecure key derivation algorithm from OpenSSL

RSA for browserify

createECDH but browserifiable

browserify version of publicEncrypt & privateDecrypt

pure js diffie-hellman

browserify-des ===

Miller Rabin algorithm for primality test

random fill from browserify stand alone

Manage session history with JavaScript

ES2015-compliant shim for Number.isNaN - the global isNaN returns false positives.

Check if something is a promise

Bare minimum fetch polyfill in 500 bytes

ECMAScript 2015 (ES6) Object.assign polyfill and ponyfill

Functional programming in TypeScript

Create components whose prop changes map to a global side effect

A document head manager for React

The default theme for chakra components

🏁 High performance subscription-based form state management for React