Lightweight debugging utility for Node.js and the browser

Runtime library for TypeScript helper functions

Tiny millisecond conversion utility

Array#isArray for older browsers

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

babel's modular runtime helpers

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

Implementation of Function.prototype.bind

HTTP server cookie parsing and serialization

Robustly `.call.bind()` a function

string representations of objects in node and the browser

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.

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.

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

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.

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

ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.

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.

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.

A simple utility for conditionally joining classNames together

Parse and stringify URL query strings

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

Utility package to determine if an `Array.prototype` method properly boxes the callback's receiver and third argument.

Filter object keys and values into a new object

A lightweight toolset for writing styles in Javascript.

Split a string on the first occurance of a given separator

A polyfill for the Resize Observer API

Easily-extendable error for use with ES6 classes

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

A simple and powerful JavaScript animation library

_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_

Firebase Component Platform

🐻 Bear necessities for state management in React

A logger package for use in the Firebase JS SDK

Angular - the routing library

An ES5 spec-compliant `Array.prototype.map` shim/polyfill/replacement that works as far down as ES3.

Iterate any JS iterator. Works robustly in all environments, all versions.

ES Proposal spec-compliant shim for Promise.allSettled

React draggable component

String convertions

Generate media query string from JSON or javascript object

A frame-synced render loop for JavaScript

Monitor if a component is inside the viewport, using IntersectionObserver API

A simple base class for creating fast, lightweight web components

Firebase JavaScript library for web and Node.js

Collection of React Hooks

Finite State Machines and Statecharts for the Modern Web.

Parsers, transformers and tests for special value types, eg: %, hex codes etc.

Awesome Media Queries in JavaScript

React port of slick carousel

Detect device type and render your component according to it

Provides a fast, pretty robust e-mail validator. Only checks form, not function.

A sane JSONP implementation.

A scroll component for React.js

React Google Tag Manager Module

Javascript library for Amplitude Analytics

Pure Javascript Multilingual OCR