JSPM

Advanced unique ID generation utility with multi-layer encoding, collision detection, and context-aware features

High-performance distributed unique ID generator based on Twitter's Snowflake algorithm. Supports ESM and CommonJS with BigInt for precision.

Unique ID for current browser (client).

Get the default browser

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

Browser unique signature (Fingerprint) generator

AWS X-Ray ID generator for OpenTelemetry

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

Easy library for generating unique passwords in browsers.

The string_decoder module from Node core

Bunch of useful filters for angularJS(with no external dependencies!)

Node.js Buffer API, for the browser

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.

ES2015 `Object.assign()` ponyfill

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

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

Promise based HTTP client for the browser and node.js

Determine if an object is a Buffer

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

Public logs API for OpenTelemetry

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.

Lightweight browser detector

Public API for OpenTelemetry

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

Microsoft Azure SDK for JavaScript - Aborter

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

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

SDK for change control. Enable Git-like capabilities like versioning, history, and blame in apps and AI agents.

JavaScript library for DOM operations

Universal WHATWG Fetch API for Node, Browsers and React Native

the stream module from node core for browsers

High performance (de)compression in an 8kB package

Parse and stringify URL query strings

Parse milliseconds into an object

An isomorphic client library for the Azure Event Grid service.

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

the path module from node core for browsers

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

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

Decode JWT tokens, mostly useful for browser applications.

A simple, lightweight JavaScript API for handling cookies

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

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

Random number generator for browsers and node.js

Microsoft Azure SDK for JavaScript - Logger

HTML5 `FormData` for Browsers and Node.

the tty module from node core for browsers

JSON without touching any globals

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

A polyfill for the Resize Observer API

https module compatability for browserify

timers module for browserify

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

vm module for the browser

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

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

node's constants module for the browser

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

Promisify an event by waiting for it to be emitted

Isomorphic implementation of WebSocket

resolve which handles browser field support in package.json

Copy stuff into clipboard using JS with fallbacks

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

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

Toggle current selected content in browser

OAuth 2 / OpenID Connect Client API for JavaScript Runtimes

Lazy assertions without performance penalty

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

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

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

Manage child views in a Backbone.View

JavaScript's functional programming helper library.

Microsoft Azure Storage SDK for JavaScript - Blob

A toolkit for deep structure manipulations, provides deep merge/clone functionality out of the box, and exposes hooks and custom adapters for more control and greater flexibility.

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

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

Tiny and elegant HTTP client based on the Fetch API

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

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

Get a KeyboardEvent.key-style string from an event

Check if a value is a natural number

Cross-browser `CustomEvent` constructor

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.

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

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

Isomorphic WebSocket

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

JavaScript SVG parser and renderer on Canvas.

LRU and FIFO caches for Client or Server

HKDF with no dependencies using runtime's native crypto

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

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

Plugin for loglevel message prefixing

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

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

Dynamic script loading for browser

Serializes any DOM node into a String

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

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

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

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

Tests if ES6 Symbol is supported.

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

Topological sort of directed acyclic graphs (like dependecy lists)

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

browser-side require() the node way

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

A tool to get browser's scrollbars width.

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

Isomorphic client library for Azure KeyVault's keys.

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

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

Array#filter for older browsers.

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

Get the paths of edge browser easily

DOMParser.parseFromString for XML with IE8 fallback

File manager plugin for CKEditor 5

Node standard library for browser.

Analyze and debug space usage through source maps

Unpack a browser type and version from the useragent string

Detect device type and render your component according to it

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

Tests if ES6 @@toStringTag is supported.

Extends Chai with assertions about promises.

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

sort module-deps output for deterministic browserify bundles

Browser compatibility data provided by MDN Web Docs

XMLHttpRequest emulation for node.js

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

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

Simple JS stack with auto run for node and browsers

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

Isomorphic client library for Azure KeyVault's secrets.

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

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

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

Check if mobile browser.

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

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

Lint browser compatibility of API used

OpenTelemetry instrumentation for fetch http client in web browsers

Mouse wheel normalization across multiple multiple browsers.

Logger Utils

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

A client for working with the BrowserStack APIs.

Javascript audio library for the modern web.

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

provides locking mechanism to sync across browser tabs

A generated SDK for WebSiteManagementClient.

Promptbook: Turn your company's scattered knowledge into AI ready books

OpenTelemetry instrumentation for XMLHttpRequest http client in web browsers

Environment utilities

Minimal JavaScript module loader

Turn identifiers into global lookups that work in Node and the browser

The official Fullstory browser SDK

tap-producing test harness for node and browsers

A Minimalistic Wrapper for IndexedDB

An isomorphic client library for the Azure Text Analytics service.

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!

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

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

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

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

Tiny local JSON database for Node, Electron and the browser

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

Cross Platform implementation of the GitLab API

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.

Simple JS queue with auto run for node and browsers

Browser fingerprinting library with the highest accuracy and stability

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

A generated SDK for ResourceManagementClient.

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

Compress images in the browser

Lint CSS for browser support against caniuse database

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

strings comparison matchers for chai

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

Test whether value is error object

Browser port of the Node.js 'request' package

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

Google's libphonenumber pre-compiled with the closure compiler

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

watch mode for browserify builds

Lightweight copy to clipboard for the web

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

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

Normalize browsers' default style

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

Simple JS queue with auto run for node and browsers

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

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

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.

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

Chromium Binary for Serverless Platforms

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

Extend Chai Assertion library with tests for http apis

Auto mock all localstorage and sessionstorage APIs for your Jest tests

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)

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

<!-- markdownlint-disable MD024 -->

Microsoft Azure Storage SDK for JavaScript - Queue

Consistent cross browser mouse wheel movement

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

Faro instrumentations, metas, transports for web.

A pure JavaScript client for the tus resumable upload protocol

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

Check if browser is Internet Explorer

Check if a value is a `Blob`

A companion library to openai for Azure OpenAI.

Populate a <canvas> element with a font texture atlas

browserify compatible version of the ace editor.

tiny http client for Node and the browser

UI utilities

Get the size of an element in pixels, including margins

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

small function to append a query string to a URL

Check if browser is Firefox

Use Ky in both Node.js and 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.

insert a string of css into the <head>

Faro web tracing implementation.

Mouse wheel normalization across multiple multiple browsers.

Browser running for Vitest using playwright

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

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

A dynamic, browser-based visualization library.

Javascript string formatter for human readability

JS Library & ExpressJS user-agent middleware exposing

memlab API

Sentence similarity algorithm.

JavaScript barcode generator supporting over 100 types and standards.

Fast client-side asset builder

Chai plugin for JSON Schema v4

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

Base draggable class

compute the bounding box of geojson features

get webrtc browser methods unprefixed

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

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

Utility library to determine and normalize Element.scrollLeft behavior

Bitcoin Cash cashaddr address format support for Node.js and web browsers.

A generated SDK for ContainerInstanceManagementClient.

Advanced HTTP requests in node.js and browsers

Auth0 headless browser sdk