JSPM

Avoid timers throttling by browser when tab is inactive

Avoid timers throttling by browser when tab is inactive

The string_decoder module from Node core

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

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

Node.js Buffer API, for the browser

Array#isArray for older browsers

ES2015 `Object.assign()` ponyfill

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

A simple activity monitor to alert you when the user becomes active or inactive

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

Determine if an object is a Buffer

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

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

Lightweight browser detector

Public API for OpenTelemetry

Universal WHATWG Fetch API for Node, Browsers and React Native

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

Public logs API for OpenTelemetry

Microsoft Azure SDK for JavaScript - Aborter

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

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

Get the default browser

the stream module from node core for browsers

JavaScript's functional programming helper library.

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

A simple, lightweight JavaScript API for handling cookies

JavaScript library for DOM operations

HTML5 `FormData` for Browsers and Node.

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

High performance (de)compression in an 8kB package

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

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

Parse and stringify URL query strings

Convert a typed array to a Buffer without a copy

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

Random number generator for browsers and node.js

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

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

Parse milliseconds into an object

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

Decode JWT tokens, mostly useful for browser applications.

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

Microsoft Azure SDK for JavaScript - Logger

the tty module from node core for browsers

node's constants module for the browser

vm module for the browser

https module compatability for browserify

A polyfill for the Resize Observer API

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

JSON without touching any globals

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

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

Isomorphic implementation of WebSocket

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

Lazy assertions without performance penalty

timers module for browserify

Promisify an event by waiting for it to be emitted

Copy stuff into clipboard using JS with fallbacks

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

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

Toggle current selected content in browser

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

resolve which handles browser field support in package.json

Tiny and elegant HTTP client based on the Fetch API

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

Get a KeyboardEvent.key-style string from an event

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

Microsoft Azure Storage SDK for JavaScript - Blob

Check if a value is a natural number

Cross-browser `CustomEvent` constructor

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

OAuth 2 / OpenID Connect Client API for JavaScript Runtimes

JavaScript SVG parser and renderer on Canvas.

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

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

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

Plugin for loglevel message prefixing

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.

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

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

(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.

Serializes any DOM node into a String

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

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

Isomorphic WebSocket

LRU and FIFO caches for Client or Server

HKDF with no dependencies using runtime's native crypto

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

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

Dynamic script loading for browser

Topological sort of directed acyclic graphs (like dependecy lists)

browser-side require() the node way

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

Simple JS stack with auto run for node and browsers

Tests if ES6 Symbol is supported.

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

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

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

DOMParser.parseFromString for XML with IE8 fallback

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

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

A tool to get browser's scrollbars width.

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

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

Tests if ES6 @@toStringTag is supported.

Get the paths of edge browser easily

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

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

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

Isomorphic client library for Azure KeyVault's keys.

Browser compatibility data provided by MDN Web Docs

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

sort module-deps output for deterministic browserify bundles

Extends Chai with assertions about promises.

Detect device type and render your component according to it

Unpack a browser type and version from the useragent string

A generated SDK for WebSiteManagementClient.

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

Array#filter for older browsers.

Analyze and debug space usage through source maps

Create a MD5 hash with hex encoding

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

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

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!

Node standard library for browser.

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

A generated SDK for ResourceManagementClient.

Mouse wheel normalization across multiple multiple browsers.

XMLHttpRequest emulation for node.js

A client for working with the BrowserStack APIs.

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

Minimal JavaScript module loader

Cross Platform implementation of the GitLab API

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

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

Simple JS queue with auto run for node and browsers

Tiny local JSON database for Node, Electron and the browser

File manager plugin for CKEditor 5

tap-producing test harness for node and browsers

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

Browser port of the Node.js 'request' package

Check if mobile browser.

Isomorphic client library for Azure KeyVault's secrets.

Simple JS queue with auto run for node and browsers

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.

Lint browser compatibility of API used

OpenTelemetry instrumentation for fetch http client in web browsers

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

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

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

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

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

Javascript audio library for the modern web.

Browser fingerprinting library with the highest accuracy and stability

OpenTelemetry instrumentation for XMLHttpRequest http client in web browsers

Test whether value is error object

Logger Utils

A Minimalistic Wrapper for IndexedDB

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

The official Fullstory browser SDK

Environment utilities

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

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

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

Google's libphonenumber pre-compiled with the closure compiler

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

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

Lightweight copy to clipboard for the web

strings comparison matchers for chai

watch mode for browserify builds

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

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

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

Compress images in the browser

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

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.

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

Auto mock all localstorage and sessionstorage APIs for your Jest tests

Lint CSS for browser support against caniuse database

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)

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

UI utilities

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

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.

A pure JavaScript client for the tus resumable upload protocol

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

Extend Chai Assertion library with tests for http apis

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

Chromium Binary for Serverless Platforms

provides locking mechanism to sync across browser tabs

Check if browser is Internet Explorer

tiny http client for Node and the browser

A companion library to openai for Azure OpenAI.

Microsoft Azure Storage SDK for JavaScript - Queue

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

AWS X-Ray ID generator for OpenTelemetry

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

Normalize browsers' default style

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

Check if a value is a `Blob`

small function to append a query string to a URL

Consistent cross browser mouse wheel movement

browserify compatible version of the ace editor.

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

Populate a <canvas> element with a font texture atlas

Faro instrumentations, metas, transports for web.

Cascading grid layout library

Javascript string formatter for human readability

ExpressJS/Connect/TrinteJS user-agent middleware exposing

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

Faro web tracing implementation.

<!-- markdownlint-disable MD024 -->

memlab API

Get the size of an element in pixels, including margins

Check if browser is Firefox

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

A generated SDK for StorageManagementClient.

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

Auth0 headless browser sdk

JavaScript barcode generator supporting over 100 types and standards.

Fast client-side asset builder

Fingerprint JavaScript agent

Chai plugin for JSON Schema v4

Copy to clipboard.

memlab browser E2E interaction libraries

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

Use Ky in both Node.js and browsers

Automated browser testing for the modern web development stack.

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.

Mouse wheel normalization across multiple multiple browsers.

Render React components in Vitest Browser Mode

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

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

compute the bounding box of geojson features

Migrate older jQuery code to jQuery 3.0+

A generated SDK for ContainerInstanceManagementClient.

get webrtc browser methods unprefixed

insert a string of css into the <head>

React hooks done right, for browser and SSR.

Mocha tests in Electron.

Read `*.xlsx` files of moderate size in a web browser or on a server.

Emscripten distribution of libheif for Node.JS and the browser

Vendor agnostic access to the fullscreen spec api

Event binding component

return all coordinates from a geojson object