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

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

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

Array#isArray for older browsers

Node.js Buffer API, for the browser

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

ES2015 `Object.assign()` ponyfill

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

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

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

Determine if an object is a Buffer

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

Public API for OpenTelemetry

Universal WHATWG Fetch API for Node, Browsers and React Native

Lightweight browser detector

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

Base class for node which OpenTelemetry instrumentation modules extend

Public logs API for OpenTelemetry

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

Microsoft Azure SDK for JavaScript - Aborter

JavaScript's functional programming helper library.

Get the default browser

A simple, lightweight JavaScript API for handling cookies

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

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

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

Convert a typed array to a Buffer without a copy

Parse and stringify URL query strings

the stream module from node core for browsers

Random number generator for browsers and node.js

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

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 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.

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

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

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

JSON without touching any globals

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

Isomorphic implementation of WebSocket

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

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

Toggle current selected content in browser

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

resolve which handles browser field support in package.json

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.

Get a KeyboardEvent.key-style string from an event

JavaScript SVG parser and renderer on Canvas.

OAuth 2 / OpenID Connect Client API for JavaScript Runtimes

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

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

Tiny and elegant HTTP client based on the Fetch API

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

Microsoft Azure Storage SDK for JavaScript - Blob

Check if a value is a natural number

Cross-browser `CustomEvent` constructor

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

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.

Plugin for loglevel message prefixing

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

(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.

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

Serializes any DOM node into a String

Isomorphic WebSocket

LRU and FIFO caches for Client or Server

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

HKDF with no dependencies using runtime's native crypto

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

Dynamic script loading for browser

Topological sort of directed acyclic graphs (like dependecy lists)

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

browser-side require() the node way

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

Tests if ES6 Symbol is supported.

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

DOMParser.parseFromString for XML with IE8 fallback

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

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

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

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

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.

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

Simple JS stack with auto run for node and browsers

Tests if ES6 @@toStringTag is supported.

Get the paths of edge browser easily

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

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

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

Isomorphic client library for Azure KeyVault's keys.

sort module-deps output for deterministic browserify bundles

Detect device type and render your component according to it

Extends Chai with assertions about promises.

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!

Node standard library for browser.

Create a MD5 hash with hex encoding

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

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

Browser compatibility data provided by MDN Web Docs

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

A generated SDK for ResourceManagementClient.

XMLHttpRequest emulation for node.js

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

Minimal JavaScript module loader

Analyze and debug space usage through source maps

File manager plugin for CKEditor 5

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

tap-producing test harness for node and browsers

Tiny local JSON database for Node, Electron and the browser

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

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

Check if mobile browser.

Isomorphic client library for Azure KeyVault's secrets.

Browser port of the Node.js 'request' package

Simple JS queue with auto run for node and browsers

Mouse wheel normalization across multiple multiple browsers.

A client for working with the BrowserStack APIs.

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.

Cross Platform implementation of the GitLab API

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

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

Browser fingerprinting library with the highest accuracy and stability

OpenTelemetry instrumentation for XMLHttpRequest http client in web browsers

Javascript audio library for the modern web.

Test whether value is error object

A Minimalistic Wrapper for IndexedDB

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

Logger Utils

The official Fullstory browser SDK

Environment utilities

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.

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

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

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

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

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

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

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.

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.

Google's libphonenumber pre-compiled with the closure compiler

Lightweight copy to clipboard for the web

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)

UI utilities

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

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.

Auto mock all localstorage and sessionstorage APIs for your Jest tests

A pure JavaScript client for the tus resumable upload protocol

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

Compress images in the browser

Extend Chai Assertion library with tests for http apis

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

Check if browser is Internet Explorer

provides locking mechanism to sync across browser tabs

tiny http client for Node and the browser

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

A companion library to openai for Azure OpenAI.

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

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)

Chromium Binary for Serverless Platforms

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

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

<!-- markdownlint-disable MD024 -->

Get the size of an element in pixels, including margins

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

Check if browser is Firefox

Auth0 headless browser sdk

JavaScript barcode generator supporting over 100 types and standards.

A generated SDK for StorageManagementClient.

Chai plugin for JSON Schema v4

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

Use Ky in both Node.js and browsers

memlab browser E2E interaction libraries

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

Copy to clipboard.

Fingerprint JavaScript agent

Automated browser testing for the modern web development stack.

Mouse wheel normalization across multiple multiple browsers.

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

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

compute the bounding box of geojson features

ExpressJS/Connect/TrinteJS user-agent middleware exposing

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

Faro web tracing implementation.

A generated SDK for ContainerInstanceManagementClient.

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

memlab API

insert a string of css into the <head>

Vendor agnostic access to the fullscreen spec api

React hooks done right, for browser and SSR.

Emscripten distribution of libheif for Node.JS and the browser

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

Base draggable class

return all coordinates from a geojson object

Turn a HTML string into DOM elements, cross-platform

Advanced HTTP requests in node.js and browsers

Event binding component