JSPM

Build Chrome Extensions with this Vite plugin.

Easily publish web extensions to their stores

Utility functions for Web Extensions, manifest v2 and v3

High-level events and utilities for events in Web Extensions

A more usable typed storage API for Web Extensions

Create cross-browser extensions with no build configuration.

Build Chrome Extensions with this Rollup plugin.

DOM extensions

WEBGI GLTF Extensions for glTF-Transform and three.js

AngularJS module for plural and gender MessageFormat extensions $interpolate/interpolations

Extremely minimal stylesheet/setup for Web Extensions’ options pages (also dark mode)

alert() for background pages/workers in Web Extensions

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

A lightweight Redux enhancer for syncing state across different environments, including browser extensions and Electron applications

A dead simple routing solution for browser extensions using React

Additional to @yamato-daiwa/es-extensions functionality for browser environment. Helper functions and classes aimed to reduce the routine code. Build-in TypeScript type safety.

A list of MathJax extensions provided by third-party contributors

The JavaScript library for https://extensionpay.com - payments for browser extensions, no server needed.

A package that contains an array of every single file extension there is for text files

Basic but commonly used extensions

A package that contains an array of every single file extension there is for binary files

Babel preset used for creating browser extensions. Supports React and TypeScript.

Provides prototype extensions for native JS modules

webpack plugin to handle json assets from browser extensions

webpack plugin to handle locale assets from browser extensions

webpack plugin to handle manifest icon assets from browser extensions

webpack plugin to handle manifest web resources assets from browser extensions

webpack plugin to handle browser extensions incompatibilities

webpack plugin to handle browser extensions manifest file

webpack plugin to handle common errors from browser extensions

webpack plugin to handle HTML assets from browser extensions

Detect Browser, Engine, OS, CPU, and Device type/model from User-Agent data. Supports browser & node.js environment

webpack plugin to develop cross-browser extensions and Mozilla Add-Ons.

webpack plugin to handle manifest script assets (background, content scripts, content css, service worker) from browser extensions

A generated SDK for ExtensionsClient.

Detect Browser, Engine, OS, CPU, and Device type/model from User-Agent data. Supports browser & node.js environment

Companion package to 'Extension Development - Auto Reloader' chrome extension, to automatically reload target browser extensions during the extension development process.

XMLHttpRequest emulation for node.js

Node standard library for browser.

tRPC adapters and links for everywhere in the browser

Minimal JavaScript module loader

tRPC adapter for Web Extensions

⚡ Next-gen Web Extension Framework

The string_decoder module from Node core

underscorex are some basic extensions for underscore.js

Array#isArray for older browsers

Browser-friendly inheritance fully compatible with standard node.js inherits()

Create cross-browser extensions with no build configuration.

Converts a source-map from/to different formats and allows adding/changing properties.

Node.js Buffer API, for the browser

Determine if a filename and/or buffer is text or binary. Smarter detection than the other solutions.

ES2015 `Object.assign()` ponyfill

Utilities for working with match patterns.

Open stuff like URLs, files, executables. Cross-platform.

The Node.js `util.deprecate()` function with browser support

Determine if an object is a Buffer

Messaging Library for Web Extensions

Strophe.js is an XMPP library for JavaScript

OpenTelemetry Core provides constants and utilities shared by all OpenTelemetry SDK packages.

A markdown parser library that renders to svelte components.

A library for parsing IPv4 and IPv6 IP addresses in node and the browser.

An ES2015 mostly-spec-compliant `Reflect.getPrototypeOf` sham/polyfill/replacement that works in as many engines as possible

Public logs API for OpenTelemetry

Base class for node which OpenTelemetry instrumentation modules extend

Public API for OpenTelemetry

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

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

Watch for changes and force the reload of the browser extension

Lightweight browser detector

Detect Browser, Engine, OS, CPU, and Device type/model from User-Agent & Client Hints data. Supports browser & node.js environment

Universal WHATWG Fetch API for Node, Browsers and React Native

the path module from node core for browsers

Microsoft Azure SDK for JavaScript - Aborter

JavaScript's functional programming helper library.

JWA, JWS, JWE, JWT, JWK, JWKS for Node.js, Browser, Cloudflare Workers, Deno, Bun, and other Web-interoperable runtimes

Convert a typed array to a Buffer without a copy

High performance (de)compression in an 8kB package

atob for Node.JS and Linux / Mac / Windows CLI (it's a one-liner)

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

the stream module from node core for browsers

JavaScript library for DOM operations

Effortless State Synchronization for Web Extensions

Get the default browser

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

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

Parse and stringify URL query strings

A simple, lightweight JavaScript API for handling cookies

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

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

HTML5 `FormData` for Browsers and Node.

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

https module compatability for browserify

Random number generator for browsers and node.js

Decode JWT tokens, mostly useful for browser applications.

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

a browserify server for rapid prototyping

JSON without touching any globals

Parse milliseconds into an object

Isomorphic implementation of WebSocket

timers module for browserify

the tty module from node core for browsers

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

vm module for the browser

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

node's constants module for the browser

A polyfill for the Resize Observer API

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

Lazy assertions without performance penalty

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

Toggle current selected content in browser

Microsoft Azure SDK for JavaScript - Logger

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

Promisify an event by waiting for it to be emitted

Copy stuff into clipboard using JS with fallbacks

resolve which handles browser field support in package.json

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

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

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

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

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

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

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

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

Get a KeyboardEvent.key-style string from an event

OAuth 2 / OpenID Connect Client API for JavaScript Runtimes

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

Microsoft Azure Storage SDK for JavaScript - Blob

Cross-browser `CustomEvent` constructor

Check if a value is a natural number

Tiny and elegant HTTP client based on the Fetch API

(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.

Isomorphic WebSocket

JavaScript SVG parser and renderer on Canvas.

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

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

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.

LRU and FIFO caches for Client or Server

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

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

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)

Serializes any DOM node into a String

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

Plugin for loglevel message prefixing

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

Dynamic script loading for browser

A tool to get browser's scrollbars width.

browser-side require() the node way

HKDF with no dependencies using runtime's native crypto

DOMParser.parseFromString for XML with IE8 fallback

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

Tests if ES6 @@toStringTag is supported.

Tests if ES6 Symbol is supported.

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

Isomorphic client library for Azure KeyVault's keys.

Extends Chai with assertions about promises.

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

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

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

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

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

sort module-deps output for deterministic browserify bundles

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

Array#filter for older browsers.

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

Simple JS stack with auto run for node and browsers

A generated SDK for WebSiteManagementClient.

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

Unpack a browser type and version from the useragent string

Browser compatibility data provided by MDN Web Docs

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

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

Analyze and debug space usage through source maps

Create a MD5 hash with hex encoding

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)

Detect device type and render your component according to it

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!

Get the paths of edge browser easily

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

tap-producing test harness for node and browsers

A generated SDK for ResourceManagementClient.

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

A client for working with the BrowserStack APIs.

OpenTelemetry instrumentation for fetch http client in web browsers

Cross Platform implementation of the GitLab API

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

Mouse wheel normalization across multiple multiple browsers.

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

Check if mobile browser.

OpenTelemetry instrumentation for XMLHttpRequest http client in web browsers

Tiny local JSON database for Node, Electron and the browser

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

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

Easily publish web extensions to their stores

File manager plugin for CKEditor 5

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

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

Browser port of the Node.js 'request' package

A Minimalistic Wrapper for IndexedDB

A logging library for browsers and nodejs environment

Build Chrome Extensions with this Rollup plugin.

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

Test whether value is error object

Simple JS queue with auto run for node and browsers

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

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

Lint browser compatibility of API used

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

Universal VDA 5050 library for Node.js and browsers

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

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.

Isomorphic client library for Azure KeyVault's secrets.

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

Javascript audio library for the modern web.

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

Simple JS queue with auto run for node and browsers

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

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

Browser fingerprinting library with the highest accuracy and stability

The official Fullstory browser SDK

watch mode for browserify builds

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

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

Google's libphonenumber pre-compiled with the closure compiler

Logger Utils

strings comparison matchers for chai

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

Lightweight copy to clipboard for the web

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

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

Environment utilities

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

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)

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

Compress images in the browser

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

Normalize browsers' default style

Lint CSS for browser support against caniuse database

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

A pure JavaScript client for the tus resumable upload protocol

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

provides locking mechanism to sync across browser tabs

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

Auto mock all localstorage and sessionstorage APIs for your Jest tests

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

Microsoft Azure Storage SDK for JavaScript - Queue

Build Chrome Extensions with this Rollup plugin.

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.