JSPM

SQLocal makes it easy to run SQLite3 in the browser, backed by the origin private file system.

A NoSQL document store database for browsers and Node.js.

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.

Public logs API for OpenTelemetry

Public API for OpenTelemetry

Lint CSS for browser support against caniuse database

Universal WHATWG Fetch API for Node, Browsers and React Native

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

Lightweight browser detector

Microsoft Azure SDK for JavaScript - Aborter

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

Convert a typed array to a Buffer without a copy

JavaScript's functional programming helper library.

JavaScript library for DOM operations

High performance (de)compression in an 8kB package

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

the stream module from node core for browsers

Parse and stringify URL query strings

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

Save [CouchDB sequence #s](http://docs.couchdb.org/en/2.1.1/api/database/changes.html#changes-feeds) to a configurable backend. This allows you to resume CouchDB replication from the point where you left off.

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

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

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

A simple, lightweight JavaScript API for handling cookies

Get the default 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 👨‍💻.

Parse milliseconds into an object

Random number generator for browsers and node.js

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

https module compatability for browserify

node's constants module for the browser

the tty module from node core for browsers

Isomorphic implementation of WebSocket

vm module for the browser

JSON without touching any globals

timers module for browserify

A polyfill for the Resize Observer API

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

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

Lazy assertions without performance penalty

Toggle current selected content in browser

Copy stuff into clipboard using JS with fallbacks

Promisify an event by waiting for it to be emitted

Microsoft Azure SDK for JavaScript - Logger

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

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.

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

resolve which handles browser field support in package.json

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

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

A WebSocket-TCP proxy that enables PostgreSQL clients to connect to a Postgres database running in the browser

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

Get a KeyboardEvent.key-style string from an event

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

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

OAuth 2 / OpenID Connect Client API for JavaScript Runtimes

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

Library providing embeddability, multi-tenancy, replication, automatic snapshotting, and branching of SQLite databases at scale.

Microsoft Azure Storage SDK for JavaScript - Blob

Cross-browser `CustomEvent` constructor

Check if a value is a natural number

Tiny and elegant HTTP client based on the Fetch API

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

Isomorphic WebSocket

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

JavaScript SVG parser and renderer on Canvas.

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

LRU and FIFO caches for Client or Server

Serializes any DOM node into a String

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.

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

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

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

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

Topological sort of directed acyclic graphs (like dependecy lists)

HKDF with no dependencies using runtime's native crypto

Dynamic script loading for browser

Plugin for loglevel message prefixing

A tool to get browser's scrollbars width.

SQLocal makes it easy to run SQLite3 in the browser, backed by the origin private file system.

browser-side require() the node way

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

Universal Storage for KVS.

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

Tests if ES6 Symbol is supported.

A generated SDK for CosmosDBForPostgreSQL.

DOMParser.parseFromString for XML with IE8 fallback

Tests if ES6 @@toStringTag is supported.

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

Isomorphic client library for Azure KeyVault's keys.

Extends Chai with assertions about promises.

an eventually consistent database

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

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

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

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

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

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

Array#filter for older browsers.

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

sort module-deps output for deterministic browserify bundles

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

Unpack a browser type and version from the useragent string

XMLHttpRequest emulation for node.js

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

Simple JS stack with auto run for node and browsers

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

A generated SDK for WebSiteManagementClient.

Node standard library for browser.

Browser compatibility data provided by MDN Web Docs

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

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

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!

Analyze and debug space usage through source maps

A generated SDK for ResourceManagementClient.

Detect device type and render your component according to it

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

Get the paths of edge browser easily

Minimal JavaScript module loader

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

An simple, dependency free, require & go node.js and browser database

A client for working with the BrowserStack APIs.

tap-producing test harness for node and browsers

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

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

Cross Platform implementation of the GitLab API

OpenTelemetry instrumentation for fetch http client in web browsers

Mouse wheel normalization across multiple multiple browsers.

Browser port of the Node.js 'request' package

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

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

Check if mobile browser.

OpenTelemetry instrumentation for XMLHttpRequest http client in web browsers

Test whether value is error object

File manager plugin for CKEditor 5

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

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

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

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

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

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

Lint browser compatibility of API used

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

Simple JS queue with auto run for node and browsers

Isomorphic client library for Azure KeyVault's secrets.

watch mode for browserify builds

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

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

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

Usercentrics CMP Browser SDK

strings comparison matchers for chai

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

Browser fingerprinting library with the highest accuracy and stability

Javascript audio library for the modern web.

Simple JS queue with auto run for node and browsers

The official Fullstory browser SDK

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

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

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

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

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

Logger Utils

Environment utilities

Database Manager with optional encryption for SQLite in the browser.

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

Compress images in the browser

A pure JavaScript client for the tus resumable upload protocol

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

✍ Easy to use local JSON database

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

Normalize browsers' default style

Tiny local JSON database for Node, Electron and the browser

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

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

provides locking mechanism to sync across browser tabs

Auto mock all localstorage and sessionstorage APIs for your Jest tests

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

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.

Tiny local JSON database for Node, Electron and the browser

Extend Chai Assertion library with tests for http apis

Microsoft Azure Storage SDK for JavaScript - Queue

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

Chromium Binary for Serverless Platforms

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

Check if a value is a `Blob`

AWS X-Ray ID generator for OpenTelemetry

Faro instrumentations, metas, transports for web.

browserify compatible version of the ace editor.

UI utilities

Consistent cross browser mouse wheel movement

Populate a <canvas> element with a font texture atlas

small function to append a query string to a URL

tiny http client for Node and the browser

Get the size of an element in pixels, including margins

Check if browser is Firefox

<!-- markdownlint-disable MD024 -->

Check if browser is Internet Explorer

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

Cascading grid layout library

Automated browser testing for the modern web development stack.

A companion library to openai for Azure OpenAI.

Mouse wheel normalization across multiple multiple browsers.

Faro web tracing implementation.

ExpressJS/Connect/TrinteJS user-agent middleware exposing

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

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

Chai plugin for JSON Schema v4

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

Advanced HTTP requests in node.js and browsers

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

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

JavaScript barcode generator supporting over 100 types and standards.

Render React components in Vitest Browser Mode

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

insert a string of css into the <head>

Copy to clipboard.

React hooks done right, for browser and SSR.

A regular expression that matches a CHANGELOG filename

return all coordinates from a geojson object

Auth0 headless browser sdk

Fast client-side asset builder

A generated SDK for ContainerInstanceManagementClient.

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

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

Utility library to determine and normalize Element.scrollLeft behavior

Javascript string formatter for human readability

memlab browser E2E interaction libraries

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

memlab API

Generic browser priority queue.

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.

Base draggable class

Use Ky in both Node.js and browsers

Emscripten distribution of libheif for Node.JS and the browser

a geographic extent object

get webrtc browser methods unprefixed

compute the bounding box of geojson features