JSPM

Build Chrome Extensions with this Vite plugin.

Easily publish web extensions to their stores

A list of MathJax extensions provided by third-party contributors

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

Basic but commonly used extensions

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.

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

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 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 handle common errors from browser extensions

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

⚡ Next-gen Web Extension Framework

tRPC adapter for Web Extensions

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.

Node.js Buffer API, for the browser

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

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

ES2015 `Object.assign()` ponyfill

Utilities for working with match patterns.

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

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

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.

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

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

Base class for node which OpenTelemetry instrumentation modules extend

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

Public logs API for OpenTelemetry

Public API for OpenTelemetry

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

Watch for changes and force the reload of the browser extension

Universal WHATWG Fetch API for Node, Browsers and React Native

the path module from node core for browsers

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

Lightweight browser detector

Microsoft Azure SDK for JavaScript - Aborter

Convert a typed array to a Buffer without a copy

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

JavaScript's functional programming helper library.

High performance (de)compression in an 8kB package

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

the stream module from node core for browsers

JavaScript library for DOM operations

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

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

Effortless State Synchronization for Web Extensions

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

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

Parse and stringify URL query strings

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

A simple, lightweight JavaScript API for handling cookies

Get the default browser

HTML5 `FormData` for Browsers and Node.

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

Random number generator for browsers and node.js

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

Decode JWT tokens, mostly useful for browser applications.

node's constants module for the browser

https module compatability for browserify

a browserify server for rapid prototyping

Parse milliseconds into an object

Isomorphic implementation of WebSocket

timers module for browserify

JSON without touching any globals

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.

A polyfill for the Resize Observer API

Copy stuff into clipboard using JS with fallbacks

Toggle current selected content in browser

Lazy assertions without performance penalty

Microsoft Azure SDK for JavaScript - Logger

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

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

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

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

Promisify an event by waiting for it to be emitted

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

resolve which handles browser field support in package.json

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

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

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

Get a KeyboardEvent.key-style string from an event

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

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

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

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

OAuth 2 / OpenID Connect Client API for JavaScript Runtimes

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.

JavaScript SVG parser and renderer on Canvas.

Isomorphic WebSocket

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

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

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

LRU and FIFO caches for Client or Server

Serializes any DOM node into a String

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.

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.

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

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

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

Topological sort of directed acyclic graphs (like dependecy lists)

Plugin for loglevel message prefixing

Dynamic script loading for browser

A tool to get browser's scrollbars width.

HKDF with no dependencies using runtime's native crypto

browser-side require() the node way

DOMParser.parseFromString for XML with IE8 fallback

Tests if ES6 @@toStringTag is supported.

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

Isomorphic client library for Azure KeyVault's keys.

Tests if ES6 Symbol is supported.

Extends Chai with assertions about promises.

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

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

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

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

Unpack a browser type and version from the useragent string

sort module-deps output for deterministic browserify bundles

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

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

Array#filter for older browsers.

Simple JS stack with auto run for node and browsers

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

A generated SDK for WebSiteManagementClient.

Browser compatibility data provided by MDN Web Docs

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

A generated SDK for ResourceManagementClient.

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!

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

Analyze and debug space usage through source maps

Detect device type and render your component according to it

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

Get the paths of edge browser easily

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

Create a MD5 hash with hex encoding

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

Tiny local JSON database for Node, Electron and the browser

A client for working with the BrowserStack APIs.

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

tap-producing test harness for node and browsers

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

Cross Platform implementation of the GitLab API

OpenTelemetry instrumentation for fetch http client in web browsers

Mouse wheel normalization across multiple multiple browsers.

Browser port of the Node.js 'request' package

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

Check if mobile browser.

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

OpenTelemetry instrumentation for XMLHttpRequest http client in web browsers

Test whether value is error object

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

File manager plugin for CKEditor 5

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

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

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

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

Easily publish web extensions to their stores

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

A logging library for browsers and nodejs environment

A Minimalistic Wrapper for IndexedDB

Build Chrome Extensions with this Rollup plugin.

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

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

Universal VDA 5050 library for Node.js and browsers

Lint browser compatibility of API used

Simple JS queue with auto run for node and browsers

watch mode for browserify builds

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

Isomorphic client library for Azure KeyVault's secrets.

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.

strings comparison matchers for chai

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

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

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

Browser fingerprinting library with the highest accuracy and stability

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

Javascript audio library for the modern web.

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

The official Fullstory browser SDK

Simple JS queue with auto run for node and browsers

Google's libphonenumber pre-compiled with the closure compiler

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

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)

Logger Utils

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

Lightweight copy to clipboard for the web

Environment utilities

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

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

Compress images in the browser

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

Lint CSS for browser support against caniuse database

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

A pure JavaScript client for the tus resumable upload protocol

Normalize browsers' default style

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

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

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

provides locking mechanism to sync across browser tabs

Auto mock all localstorage and sessionstorage APIs for your Jest tests

Extend Chai Assertion library with tests for http apis

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

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.

Build Chrome Extensions with this Rollup plugin.