JSPM

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

Random number generator for browsers and node.js

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

Get the default browser

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

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

Decode JWT tokens, mostly useful for browser applications.

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

https module compatability for browserify

Parse milliseconds into an object

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

JSON without touching any globals

Isomorphic implementation of WebSocket

the tty module from node core for browsers

vm module for the browser

Microsoft Azure SDK for JavaScript - Logger

node's constants module for the browser

Brotli compression/decompression that encodes to base-unicode and back. Node.js and Browser support.

timers module for browserify

A polyfill for the Resize Observer API

Lazy assertions without performance penalty

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

Toggle current selected content in browser

Promisify an event by waiting for it to be emitted

Copy stuff into clipboard using JS with fallbacks

resolve which handles browser field support in package.json

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

[](#)   ![GitHub issues](https://img.sh

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.

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

Get a KeyboardEvent.key-style string from an event

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

OAuth 2 / OpenID Connect Client API for JavaScript Runtimes

<div> <div align="center"> <img src="https://raw.githubusercontent.com/jjxxs/websocket-ts/gh-pages/websocket-ts-logo.svg" alt="websocket-ts" width="300" height="65" /> </div> <p align="center"> <img src="https://github.com/jjxxs/websocket-ts

JavaScript SVG parser and renderer on Canvas.

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

Tiny and elegant HTTP client based on the Fetch API

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

TypeScript library for parsing and serializing XML, OpenStep/NextStep and binary Property Lists, in browser and node.js.

LRU and FIFO caches for Client or Server

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

Topological sort of directed acyclic graphs (like dependecy lists)

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

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

Dynamic script loading for browser

Serializes any DOM node into a String

browser-side require() the node way

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

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

HKDF with no dependencies using runtime's native crypto

DOMParser.parseFromString for XML with IE8 fallback

Plugin for loglevel message prefixing

TypedArray. Work with bytes. Can be used as a Buffer, TypedArray, BitView, DataView. Client side and server side support.

A tool to get browser's scrollbars width.

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

Tests if ES6 Symbol is supported.

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 binary files

Tests if ES6 @@toStringTag is supported.

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

Isomorphic client library for Azure KeyVault's keys.

Extends Chai with assertions about promises.

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

sort module-deps output for deterministic browserify bundles

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

Simple JS stack with auto run for node and browsers

A generated SDK for WebSiteManagementClient.

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

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

Detect device type and render your component according to it

Get the paths of edge browser easily

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

Array#filter for older browsers.

Unpack a browser type and version from the useragent string

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

Browser compatibility data provided by MDN Web Docs

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!

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

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

tap-producing test harness for node and browsers

Analyze and debug space usage through source maps

OpenTelemetry instrumentation for fetch http client in web browsers

A generated SDK for ResourceManagementClient.

Check if mobile browser.

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

Tiny local JSON database for Node, Electron and the browser

Minimal JavaScript module loader

File manager plugin for CKEditor 5

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

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

Simple JS queue with auto run for node and browsers

OpenTelemetry instrumentation for XMLHttpRequest http client in web browsers

Read file blobs easily

A client for working with the BrowserStack APIs.

Mouse wheel normalization across multiple multiple browsers.

Cross Platform implementation of the GitLab API

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

Lint browser compatibility of API used

A Minimalistic Wrapper for IndexedDB

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

Isomorphic client library for Azure KeyVault's secrets.

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

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

Browser fingerprinting library with the highest accuracy and stability

convert an AudioBuffer to .wav format

Test whether value is error object

Binary protocol buffer for javascript

The official Fullstory browser SDK

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

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.

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

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

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

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.

Environment utilities

The minimum code point of 4 byte characters in UTF-8

Simple JS queue with auto run for node and browsers

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

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

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

Javascript audio library for the modern web.

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

watch mode for browserify builds

strings comparison matchers for chai

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

WebGL & GLSL abstraction layer

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

Google's libphonenumber pre-compiled with the closure compiler

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

Logger Utils

Lightweight copy to clipboard for the web

read all or part of the content in a Blob or File as a Buffer or Stream

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)

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

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

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

A pure JavaScript client for the tus resumable upload protocol

Compress images in the browser

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Normalize browsers' default style

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.

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

UI utilities

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Microsoft Azure Storage SDK for JavaScript - Queue

provides locking mechanism to sync across browser tabs

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

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

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AWS X-Ray ID generator for OpenTelemetry

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Check if browser is Internet Explorer

Faro instrumentations, metas, transports for web.

Auto mock all localstorage and sessionstorage APIs for your Jest tests

Chromium Binary for Serverless Platforms

Extend Chai Assertion library with tests for http apis

Populate a <canvas> element with a font texture atlas

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

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

<!-- markdownlint-disable MD024 -->

small function to append a query string to a URL

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

Cascading grid layout library

Check if a value is a `Blob`

browserify compatible version of the ace editor.

Consistent cross browser mouse wheel movement

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

tiny http client for Node and the browser

Get the size of an element in pixels, including margins

Check if browser is Firefox

Easily work with data bytes like a pro.

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

Chai plugin for JSON Schema v4

Auth0 headless browser sdk

JavaScript barcode generator supporting over 100 types and standards.

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

A companion library to openai for Azure OpenAI.

Advanced HTTP requests in node.js and browsers

Mouse wheel normalization across multiple multiple browsers.

Automated browser testing for the modern web development stack.

Javascript string formatter for human readability

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

Faro web tracing implementation.

Plugin for loglevel which allows buffering of log messages

ExpressJS/Connect/TrinteJS user-agent middleware exposing

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

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

Generic browser priority queue.

Use Ky in both Node.js and browsers

compute the bounding box of geojson features

insert a string of css into the <head>

A generated SDK for ContainerInstanceManagementClient.

memlab browser E2E interaction libraries

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

Emscripten distribution of libheif for Node.JS and the browser

A regular expression that matches a CHANGELOG filename

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.

Render React components in Vitest Browser Mode

AngularJS mocks for testing

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

Cross browser String#split implementation

Base draggable class

React hooks done right, for browser and SSR.

Fast client-side asset builder

Copy to clipboard.

Capture browser logs for logging in NodeJS

return all coordinates from a geojson object

memlab API

Returns `true` if the Selection is "backward", `false` otherwise

get webrtc browser methods unprefixed

Simple utility for watching and retrieving browser viewport width, height, vmin and vmax

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.

A generated SDK for ComputeManagementClient.

launch a web worker that can require() in the browser with browserify

Check if servers are reachable

Vendor agnostic access to the fullscreen spec api

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

Utility library to determine and normalize Element.scrollLeft behavior

Migrate older jQuery code to jQuery 3.0+

Turn a HTML string into DOM elements, cross-platform

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

A generated SDK for NetworkManagementClient.

a geographic extent object

Provides an enum of all possible VNode Flags used when calling Inferno.createVNode

Fingerprint Pro JavaScript agent