JSPM

Wallet address validator for Bitcoin and other Altcoins.

ES2015 `Object.assign()` ponyfill

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

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

Tari Address Generator WASM module for web browsers

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

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

Public API for OpenTelemetry

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

Base class for node which OpenTelemetry instrumentation modules extend

JavaScript's functional programming helper library.

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

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

Lightweight browser detector

High performance (de)compression in an 8kB package

Convert a typed array to a Buffer without a copy

A simple, lightweight JavaScript API for handling cookies

Microsoft Azure SDK for JavaScript - Aborter

JavaScript library for DOM operations

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

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

HTML5 `FormData` for Browsers and Node.

Parse and stringify URL query strings

the stream module from node core for browsers

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

Random number generator for browsers and node.js

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

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

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

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

Get the default browser

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.

https module compatability for browserify

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

Parse milliseconds into an object

JSON without touching any globals

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

Isomorphic implementation of WebSocket

timers module for browserify

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

A polyfill for the Resize Observer API

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

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

Lazy assertions without performance penalty

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

Toggle current selected content in browser

resolve which handles browser field support in package.json

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.

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

Embed the XRiSE swap widget into any website or dApp to enable Web3 token swaps. A customizable DeFi DEX widget for XRPL EVM, with wallet support (MetaMask, WalletConnect) and referral rewards. (CDN browser bundle only)

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

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

Get a KeyboardEvent.key-style string from an event

OAuth 2 / OpenID Connect Client API for JavaScript Runtimes

JavaScript SVG parser and renderer on Canvas.

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

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

Microsoft Azure Storage SDK for JavaScript - Blob

Tiny and elegant HTTP client based on the Fetch API

Check if a value is a natural number

Cross-browser `CustomEvent` constructor

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

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.

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

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

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.

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

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

Topological sort of directed acyclic graphs (like dependecy lists)

Serializes any DOM node into a String

Dynamic script loading for browser

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

browser-side require() the node way

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

Plugin for loglevel message prefixing

HKDF with no dependencies using runtime's native crypto

DOMParser.parseFromString for XML with IE8 fallback

A tool to get browser's scrollbars width.

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

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

Tests if ES6 @@toStringTag is supported.

Tests if ES6 Symbol is supported.

Isomorphic client library for Azure KeyVault's keys.

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

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

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

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

Extends Chai with assertions about promises.

sort module-deps output for deterministic browserify bundles

A javascript library allows to manipulate keys/wallet on browser.

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

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

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

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

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

A generated SDK for WebSiteManagementClient.

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

Get the paths of edge browser easily

Detect device type and render your component according to it

Unpack a browser type and version from the useragent string

Simple JS stack with auto run for node and browsers

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

XMLHttpRequest emulation for node.js

Array#filter for older browsers.

Wallet address validator for Bitcoin and other Altcoins.

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

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!

Browser compatibility data provided by MDN Web Docs

Node standard library for browser.

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

tap-producing test harness for node and browsers

Analyze and debug space usage through source maps

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

A generated SDK for ResourceManagementClient.

OpenTelemetry instrumentation for fetch http client in web browsers

Minimal JavaScript module loader

Check if mobile browser.

OpenTelemetry instrumentation for XMLHttpRequest http client in web browsers

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

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

Create a MD5 hash with hex encoding

Tiny local JSON database for Node, Electron and the browser

File manager plugin for CKEditor 5

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

A client for working with the BrowserStack APIs.

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

Mouse wheel normalization across multiple multiple browsers.

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

Isomorphic client library for Azure KeyVault's secrets.

Cross Platform implementation of the GitLab API

Lint browser compatibility of API used

A Minimalistic Wrapper for IndexedDB

Browser port of the Node.js 'request' package

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

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

Test whether value is error object

Browser fingerprinting library with the highest accuracy and stability

Simple JS queue with auto run for node and browsers

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

The official Fullstory browser SDK

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

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

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

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

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

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

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

Easy Ledger Wallet support for Stellar applications and command line

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.

Simple JS queue with auto run for node and browsers

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

watch mode for browserify builds

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

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

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

strings comparison matchers for chai

Javascript audio library for the modern web.

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

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

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

Google's libphonenumber pre-compiled with the closure compiler

Logger Utils

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)

Lightweight copy to clipboard for the web

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

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

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

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

Lint CSS for browser support against caniuse database

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

Compress images in the browser

Normalize browsers' default style

UI utilities

Crypto wallet address validator for Bitcoin and other Altcoins.

provides locking mechanism to sync across browser tabs

Microsoft Azure Storage SDK for JavaScript - Queue

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

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

AWS X-Ray ID generator for OpenTelemetry

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

Check if browser is Internet Explorer

Faro instrumentations, metas, transports for web.

Auto mock all localstorage and sessionstorage APIs for your Jest tests

Populate a <canvas> element with a font texture atlas

Extend Chai Assertion library with tests for http apis

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

Chromium Binary for Serverless Platforms

<!-- markdownlint-disable MD024 -->

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

small function to append a query string to a URL

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

Check if a value is a `Blob`

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

browserify compatible version of the ace editor.

Consistent cross browser mouse wheel movement

Cascading grid layout library

Get the size of an element in pixels, including margins

tiny http client for Node and the browser

Check if browser is Firefox

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

Ledger Hardware Wallet Web implementation of the communication layer, using U2F api

Chai plugin for JSON Schema v4

Read small to medium `*.xlsx` files in a browser or Node.js. Parse to JSON with a strict schema.

Auth0 headless browser sdk

JavaScript barcode generator supporting over 100 types and standards.

Mouse wheel normalization across multiple multiple browsers.

Javascript string formatter for human readability

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

Advanced HTTP requests in node.js and browsers

A companion library to openai for Azure OpenAI.

Automated browser testing for the modern web development stack.

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

Use Ky in both Node.js and browsers

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

ExpressJS/Connect/TrinteJS user-agent middleware exposing

insert a string of css into the <head>

Faro web tracing implementation.

Generic browser priority queue.

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

compute the bounding box of geojson features

A generated SDK for ContainerInstanceManagementClient.

memlab browser E2E interaction libraries

A regular expression that matches a CHANGELOG filename

Emscripten distribution of libheif for Node.JS and the browser

Base draggable class

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

Capture browser logs for logging in NodeJS

React hooks done right, for browser and SSR.

Render React components in Vitest Browser Mode

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.

Copy to clipboard.

Cross browser String#split implementation

return all coordinates from a geojson object

Wallet address validator for Bitcoin and other Altcoins.