JSPM

A simple, lightweight JavaScript API for handling cookies

Library to work against complex domain names, subdomains and URIs.

Better `os.arch()` for node and the browser -- detect OS architecture

Get the default browser

HTML5 `FormData` for Browsers and Node.

the stream module from node core for browsers

Parse and stringify URL query strings

Check which JavaScript environment your code is running in at runtime: browser, Node.js, Bun, etc

Provides a Tailwind CSS configuration with RXAP-specific theme extensions, including custom color palettes and font families. It also includes an init generator that adds missing peer dependencies to the project's package.json and runs init generators for

Random number generator for browsers and node.js

Get the bundle identifier of the default browser (macOS). Example: com.apple.Safari

Minimal lightweight logging for JavaScript, adding reliable log level methods to any available console.log methods

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

A better opn. Reuse the same tab on Chrome for 👨‍💻.

Decode JWT tokens, mostly useful for browser applications.

a browserify server for rapid prototyping

Node's domain module for the web browser. This is merely an evented try...catch with the same API as node, nothing more.

https module compatability for browserify

Compare semver version strings to find greater, equal or lesser.

Parse milliseconds into an object

JSON without touching any globals

Isomorphic implementation of WebSocket

the tty module from node core for browsers

vm module for the browser

node's constants module for the browser

Microsoft Azure SDK for JavaScript - Logger

timers module for browserify

A polyfill for the Resize Observer API

Tool to convert the patterns and globs of your WebExtension manifest to regex

An alias package for `crypto.randomBytes` in Node.js and/or browsers

Lazy assertions without performance penalty

btoa for Node.JS (it's a one-liner)

OpenTelemetry Collector Trace Exporter allows user to send collected traces to the OpenTelemetry Collector

Toggle current selected content in browser

Promisify an event by waiting for it to be emitted

resolve which handles browser field support in package.json

Copy stuff into clipboard using JS with fallbacks

Converts a Web-API readable-stream into a Node.js readable-stream.

Cypress is a next generation front end testing tool built for the modern web

OpenTelemetry Zipkin Exporter allows the user to send collected traces to Zipkin.

Isomorphic client library for supporting long-running operations in node.js and browser.

The library for programming secure service workers for web applications, browser extensions, and the edge (i.e. Cloudflare Workers)

Apple's property list parser/builder for Node.js and browsers

Get a KeyboardEvent.key-style string from an event

Framework-agnostic, micro-library for getting stack traces in all environments

OAuth 2 / OpenID Connect Client API for JavaScript Runtimes

JavaScript SVG parser and renderer on Canvas.

OpenTelemetry Collector Metrics Exporter allows user to send collected metrics to the OpenTelemetry Collector

Microsoft Azure Storage SDK for JavaScript - Blob

Check if a value is a natural number

Tiny and elegant HTTP client based on the Fetch API

Cross-browser `CustomEvent` constructor

Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. It includes many web standards from WHATWG DOM and HTML.

(recursive)? merging of (cloned)? objects.

Simple wrapper for cross-browser usage of the JavaScript Fullscreen API, which lets you bring the page or any element into fullscreen.

OpenTelemetry Collector Logs Exporter allows user to send collected logs to the OpenTelemetry Collector

Isomorphic WebSocket

detect file extensions, check if text or binary file, or get list of text or binary file extensions

Messaging Library for Web Extensions

LRU and FIFO caches for Client or Server

🔥 An extremely fast and efficient LRU cache for JavaScript with high compatibility (including Browsers) — 6.8KB.

Dynamic script loading for browser

Lightweight and performant natural sorting of arrays and collections by differentiating between unicode characters, numbers, dates, etc.

Topological sort of directed acyclic graphs (like dependecy lists)

Plugin for loglevel message prefixing

Low-Level OAuth 2 / OpenID Connect Client API for JavaScript Runtimes

Serializes any DOM node into a String

browser-side require() the node way

React's ExecutionEnvironment module extracted for use in other packages & components

A JavaScript library to zip and unzip files in the browser, Deno and Node.js

DOMParser.parseFromString for XML with IE8 fallback

HKDF with no dependencies using runtime's native crypto

A tool to get browser's scrollbars width.

Tests if ES6 Symbol is supported.

A tiny (230B) and fast UUID (v4) generator for Node and the browser

Adds console.table method that prints an array of objects as a table in console

Tests if ES6 @@toStringTag is supported.

walk the dependency graph to generate json output that can be fed into browser-pack

Check whether operating system CPU architecture is 64-bit or 32-bit (Supports browsers)

Isomorphic client library for Azure KeyVault's keys.

Check in which environment the code is running - browser/node.js/webworker/jsdom/deno

Extends Chai with assertions about promises.

sort module-deps output for deterministic browserify bundles

Detect default web browser of the current user, cross-platform (Win/Lin/Mac)

Smallest/simplest possible means of using btoa with both Node and browserify

Image structural similarity (SSIM). In TypeScript/JavaScript. For browser/server.

Light-weight EventEmitter (less than 1KB when gzipped)

Creates an async iterator for a variety of inputs in the browser and node. Supports fetch, node-fetch, and cross-fetch

Simple JS stack with auto run for node and browsers

A generated SDK for WebSiteManagementClient.

pack node-style source files from a json stream into a browser bundle

Detect device type and render your component according to it

Get the paths of edge browser easily

Array#filter for older browsers.

Extends Chai with assertions for the Sinon.JS mocking framework.

Unpack a browser type and version from the useragent string

Browser compatibility data provided by MDN Web Docs

Super light and fast Extensible ES6+ events and EventEmitters for Node and the browser. Easy for any developer level, use the same exact code in node and the browser. No frills, just high speed events!

A high-performance, lightweight LRU cache. Built for developers who need fast caching without compromising on features.

Flmngr file manager (Local disk / Amazon S3 / Azure Blob)

Create a MD5 hash with hex encoding

tap-producing test harness for node and browsers

Isomorphic client Runtime for Typescript/node.js/browser javascript client libraries generated using AutoRest

Analyze and debug space usage through source maps

OpenTelemetry instrumentation for fetch http client in web browsers

A generated SDK for ResourceManagementClient.

Check if mobile browser.

Tiny local JSON database for Node, Electron and the browser

HMAC-based (HOTP) and Time-based (TOTP) One-Time Password library

File manager plugin for CKEditor 5

Provides access to the system's web browser and supports handling redirects. On iOS, it uses SFSafariViewController or ASWebAuthenticationSession, depending on the method you call, and on Android it uses ChromeCustomTabs. As of iOS 11, SFSafariViewControl

OpenTelemetry instrumentation for XMLHttpRequest http client in web browsers

Simple JS queue with auto run for node and browsers

A client for working with the BrowserStack APIs.

Mouse wheel normalization across multiple multiple browsers.

Easily publish web extensions to their stores

Cross Platform implementation of the GitLab API

Open a URL via the operating system (http: in default browser, mailto: in mail client etc.

A Minimalistic Wrapper for IndexedDB

Fastest, most accurate & effecient user agent string parser, uses Browserscope's research for parsing

Lint browser compatibility of API used

Library to work against complex domain names, subdomains and URIs. Only contains ICANN section.

A logging library for browsers and nodejs environment

Isomorphic client library for Azure KeyVault's secrets.

Browser port of the Node.js 'request' package

`[].map(f)` for older browsers

A vite plugin for generating cross browser platform, ES module based web extensions

Simple JS queue with auto run for node and browsers

Browser fingerprinting library with the highest accuracy and stability

Build Chrome Extensions with this Rollup plugin.

Universal VDA 5050 library for Node.js and browsers

Test whether value is error object

Cross platform environment variables with process.env, window.name, location.hash and localStorage fallbacks

Give your JS App some Backbone with Models, Views, Collections, and Events.

The official Fullstory browser SDK

The speed of a single-page web application without having to write any JavaScript

Promptbook: Run AI apps in plain human language across multiple models and platforms

Javascript audio library for the modern web.

Detect default web browser of the current user, cross-platform (Win/Lin/Mac)

Smallest/simplest possible means of using atob with both Node and browserify

the part of vue-inbrowser-compiler-utils that contains no vue dependency

support for asynchronous development with a Promise based task Scheduler, several different Promise implementations (synchronous, idle, asynchronous and native runtime wrappers), await helpers, and aliases all built and tested using TypeScript.

Environment utilities

Logger Utils

Copy text to the clipboard in modern browsers (0.2 kB)

A function to get the scrolling parent of an html element.

An extended Error class that envelops a parent error, such that the stack trace contains the causation

watch mode for browserify builds

TaffyDB is an opensouce library that brings database features into your JavaScript applications.

strings comparison matchers for chai

Check version ranges like `>=N` and `X || Y || Z` with support for Node.js, Web Browsers, Deno, and TypeScript.

A javascript scrollbar plugin that hides the native scrollbars, provides custom styleable overlay scrollbars, and preserves the native functionality and feel.

Oboe.js reads json, giving you the objects as they are found without waiting for the stream to finish

Google's libphonenumber pre-compiled with the closure compiler

Comprehensive TypeScript/JavaScript utility library with cross-environment support (Node.js, browser, web worker) providing helper functions, polyfills (ES5-ES2023), type checking utilities, and optimized implementations for better minification and code r

Lightweight copy to clipboard for the web

Lightning fast hash functions for browsers and Node.js using hand-tuned WebAssembly binaries (MD4, MD5, SHA-1, SHA-2, SHA-3, Keccak, BLAKE2, BLAKE3, PBKDF2, Argon2, bcrypt, scrypt, Adler-32, CRC32, CRC32C, RIPEMD-160, HMAC, xxHash, SM3, Whirlpool)

Tiny hashing module that uses the native crypto API in Node.js and the browser

A modern logging library for Node.js and modern browsers that provides log level mapping to the console

It is a lightweight rest client for node.js and the browser

Lint CSS for browser support against caniuse database

A pure JavaScript client for the tus resumable upload protocol

Compress images in the browser

Morph a DOM tree to another DOM tree (no virtual DOM needed)

Normalize browsers' default style

Automatically opens your browser and iOS Simulator to preview Node.js email messages sent with Nodemailer. Made for Forward Email and Lad. Cross-browser and cross-platform email testing.

UI utilities

Microsoft Azure Storage SDK for JavaScript - Queue

Auto mock all localstorage and sessionstorage APIs for your Jest tests

Disallow features that are unsupported by the browsers that you are targeting

provides locking mechanism to sync across browser tabs

Build Chrome Extensions with this Rollup plugin.

AWS X-Ray ID generator for OpenTelemetry

Isomorphic/Universal WHATWG URL API with some support legacy node URL API

Watch for file changes and reload WebExtensions on browsers.

Faro instrumentations, metas, transports for web.

Extend Chai Assertion library with tests for http apis

Check if browser is Internet Explorer

Chromium Binary for Serverless Platforms

Populate a <canvas> element with a font texture atlas

Small module for fitting a canvas element within the bounds of its parent.

Node's path builtin module exposed as dual ESM/CJS and browser-compatible out of the box.

<!-- markdownlint-disable MD024 -->

small function to append a query string to a URL

Check if a value is a `Blob`

A companion library to openai for Azure OpenAI.

Cascading grid layout library

Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)

Manage unstructured data using DataSet. Add, update, and remove data, and listen for changes in the data.

browserify compatible version of the ace editor.

Consistent cross browser mouse wheel movement

tiny http client for Node and the browser

Test'em 'scripts! Javascript Unit testing made easy.

Get the size of an element in pixels, including margins

Check if browser is Firefox

Chai plugin for JSON Schema v4

JavaScript barcode generator supporting over 100 types and standards.

Read small to medium `*.xlsx` files in a browser or Node.js. Parse to JSON with a strict schema.

Auth0 headless browser sdk

Mouse wheel normalization across multiple multiple browsers.

Advanced HTTP requests in node.js and browsers

Automated browser testing for the modern web development stack.

Javascript string formatter for human readability

A vite plugin for generating cross browser platform, ES module based web extensions

React component to wrap your application or component in an iFrame for encapsulation purposes

A cross-browser wrapper for the Web Audio API which aims to closely follow the standard.

Faro web tracing implementation.

ExpressJS/Connect/TrinteJS user-agent middleware exposing

Generic browser priority queue.

A jQuery plugin that adds cross-browser mouse wheel support.

Use Ky in both Node.js and browsers

insert a string of css into the <head>

compute the bounding box of geojson features

memlab browser E2E interaction libraries

A generated SDK for ContainerInstanceManagementClient.

Device detection (phone, tablet, desktop, mobile grade, os, versions)

Emscripten distribution of libheif for Node.JS and the browser

Give eachr an item to iterate (array, object or map) and an iterator, then in return eachr gives iterator the value and key of each item, and will stop if the iterator returned false.

Render React components in Vitest Browser Mode

Cross browser String#split implementation

A regular expression that matches a CHANGELOG filename

A lightweight library to decode and verify RS JWT meant for the browser.

AngularJS mocks for testing

Capture browser logs for logging in NodeJS

Base draggable class

React hooks done right, for browser and SSR.

Copy to clipboard.

An extremely fast, React-like JavaScript library for building modern user interfaces

Fast client-side asset builder

return all coordinates from a geojson object

memlab API

Fingerprint Pro JavaScript agent

Returns `true` if the Selection is "backward", `false` otherwise

A generated SDK for StorageManagementClient.

get webrtc browser methods unprefixed

Strictly typed EventTarget that directly extends EventTarget to function as a drop-in replacement. It works with all Event-Types and accounts for basically no additional bundle-size.

Watch for file changes and reload WebExtensions on browsers.

A generated SDK for ComputeManagementClient.

Simple utility for watching and retrieving browser viewport width, height, vmin and vmax

launch a web worker that can require() in the browser with browserify

Check if servers are reachable

Utility library to determine and normalize Element.scrollLeft behavior

Library to work against complex domain names, subdomains and URIs.

Vendor agnostic access to the fullscreen spec api

sflow is a powerful and highly-extensible library designed for processing and manipulating streams of data effortlessly. Inspired by the functional programming paradigm, it provides a rich set of utilities for transforming streams, including chunking, fil

Migrate older jQuery code to jQuery 3.0+

Event binding component

Turn a HTML string into DOM elements, cross-platform

A generated SDK for NetworkManagementClient.

a geographic extent object