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()

Array#isArray for older browsers

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

Node.js Buffer API, for the browser

ES2015 `Object.assign()` ponyfill

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

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

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

Determine if an object is a Buffer

Public API for OpenTelemetry

Base class for node which OpenTelemetry instrumentation modules extend

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

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

Lightweight browser detector

JavaScript's functional programming helper library.

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

Public logs API for OpenTelemetry

Universal WHATWG Fetch API for Node, Browsers and React Native

Microsoft Azure SDK for JavaScript - Aborter

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

JavaScript library for DOM operations

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

the path module from node core for browsers

Convert a typed array to a Buffer without a copy

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

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

Parse and stringify URL query strings

Get the default browser

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

the stream module from node core for browsers

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

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

A simple, lightweight JavaScript API for handling cookies

Parse milliseconds into an object

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

HTML5 `FormData` for Browsers and Node.

Decode JWT tokens, mostly useful for browser applications.

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

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

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

Random number generator for browsers and node.js

the tty module from node core for browsers

node's constants module for the browser

vm module for the browser

A polyfill for the Resize Observer API

Isomorphic implementation of WebSocket

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

Lazy assertions without performance penalty

timers module for browserify

https module compatability for browserify

Copy stuff into clipboard using JS with fallbacks

Promisify an event by waiting for it to be emitted

Microsoft Azure SDK for JavaScript - Logger

JSON without touching any globals

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

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

resolve which handles browser field support in package.json

Toggle current selected content in browser

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

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

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

Get a KeyboardEvent.key-style string from an event

OAuth 2 / OpenID Connect Client API for JavaScript Runtimes

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

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

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

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

Tiny and elegant HTTP client based on the Fetch API

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

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.

JavaScript SVG parser and renderer on Canvas.

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

Serializes any DOM node into a String

Isomorphic WebSocket

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

HKDF with no dependencies using runtime's native crypto

LRU and FIFO caches for Client or Server

Dynamic script loading for browser

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

Plugin for loglevel message prefixing

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

browser-side require() the node way

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

Tests if ES6 Symbol is supported.

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

DOMParser.parseFromString for XML with IE8 fallback

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

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

A tool to get browser's scrollbars width.

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

Topological sort of directed acyclic graphs (like dependecy lists)

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

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

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

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

Tests if ES6 @@toStringTag is supported.

Simple JS stack with auto run for node and browsers

sort module-deps output for deterministic browserify bundles

Isomorphic client library for Azure KeyVault's keys.

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

Extends Chai with assertions about promises.

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

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

A generated SDK for WebSiteManagementClient.

Unpack a browser type and version from the useragent string

Array#filter for older 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

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

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.

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

Node standard library for browser.

Browser compatibility data provided by MDN Web Docs

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

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

A generated SDK for ResourceManagementClient.

XMLHttpRequest emulation for node.js

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

Get the paths of edge browser easily

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

tap-producing test harness for node and browsers

Minimal JavaScript module loader

File manager plugin for CKEditor 5

Tiny local JSON database for Node, Electron and the browser

Detect device type and render your component according to it

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

Create a MD5 hash with hex encoding

Analyze and debug space usage through source maps

OpenTelemetry instrumentation for fetch http client in web browsers

Check if mobile browser.

Browser port of the Node.js 'request' package

OpenTelemetry instrumentation for XMLHttpRequest http client in web browsers

Mouse wheel normalization across multiple multiple browsers.

A client for working with the BrowserStack APIs.

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

Cross Platform implementation of the GitLab API

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

A Minimalistic Wrapper for IndexedDB

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

Test whether value is error object

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

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.

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

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

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.

strings comparison matchers for chai

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

watch mode for browserify builds

Lint browser compatibility of API used

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

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

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

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

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.

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

Logger Utils

Browser fingerprinting library with the highest accuracy and stability

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

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

Google's libphonenumber pre-compiled with the closure compiler

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

Environment utilities

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

The official Fullstory browser SDK

Lightweight copy to clipboard for the web

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

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)

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

A pure JavaScript client for the tus resumable upload protocol

Compress images in the browser

Extend Chai Assertion library with tests for http apis

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

Microsoft Azure Storage SDK for JavaScript - Queue

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

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

Auto mock all localstorage and sessionstorage APIs for your Jest tests

AWS X-Ray ID generator for OpenTelemetry

tiny http client for Node and the browser

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

UI utilities

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.

Check if a value is a `Blob`

small function to append a query string to a URL

browserify compatible version of the ace editor.

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

Chromium Binary for Serverless Platforms

Consistent cross browser mouse wheel movement

provides locking mechanism to sync across browser tabs

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

Normalize browsers' default style

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

A companion library to openai for Azure OpenAI.

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

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

JavaScript barcode generator supporting over 100 types and standards.

Check if browser is Internet Explorer

Chai plugin for JSON Schema v4

Get the size of an element in pixels, including margins

Check if browser is Firefox

memlab browser E2E interaction libraries

Automated browser testing for the modern web development stack.

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

Populate a <canvas> element with a font texture atlas

Copy to clipboard.

Faro instrumentations, metas, transports for web.

Cascading grid layout library

Faro web tracing implementation.

Mouse wheel normalization across multiple multiple browsers.

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.

Render React components in Vitest Browser Mode

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

ExpressJS/Connect/TrinteJS user-agent middleware exposing

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

memlab API

Emscripten distribution of libheif for Node.JS and the browser

<!-- markdownlint-disable MD024 -->

return all coordinates from a geojson object

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

React hooks done right, for browser and SSR.

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

Fast client-side asset builder

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.

Cross browser String#split implementation

A generated SDK for StorageManagementClient.

Javascript string formatter for human readability

Generic browser priority queue.

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

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

A regular expression that matches a CHANGELOG filename

Fingerprint JavaScript agent

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

A generated SDK for NetworkManagementClient.

Auth0 headless browser sdk

Utility library to determine and normalize Element.scrollLeft behavior

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