JSPM

Persistent storage for Appium extensions

Given some data, jsesc returns the shortest possible stringified & ASCII-safe representation of that data.

A JavaScript text diff implementation.

TypeScript is a language for application scale JavaScript development

An ESLint custom parser which leverages TypeScript ESTree

An Esprima-compatible JavaScript parser built on Acorn

Serialize JavaScript to a superset of JSON that includes regular expressions and functions.

prelude.ls is a functionally oriented utility library. It is powerful and flexible. Almost all of its functions are curried. It is written in, and is the recommended base library for, LiveScript.

Stylish, intuitive and user-friendly prompt system. Fast and lightweight enough for small projects, powerful and extensible enough for the most advanced use cases.

Minimalistic JavaScript library for working with collections of data.

An AST-based pattern checker for JavaScript.

Sumo Logic Javascript SDK for sending logs to a HTTP Source endpoint.

Define a data property on an object. Will fall back to assignment in an engine without descriptors.

amCharts 4

ESLint JavaScript language implementation

A parser that converts TypeScript source code into an ESTree compatible form

Build and evaluate JavaScript strings safely via tagged template literals

> Convenient JavaScript function that serializes Objects to FormData instances.

JavaScript parser, mangler/compressor and beautifier toolkit for ES6+

JavaScript library for DOM operations

JavaScript parser, mangler/compressor and beautifier toolkit

Microsoft Azure SDK for JavaScript - Aborter

ECMAScript extensions and shims

A pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module.

Tooling which enables you to use TypeScript with ESLint

amCharts 5 Fonts

A collection of utilities shared across the other packages.

Returns true if an object was created by the `Object` constructor, or Object.create(null).

Polyfill for Metadata Reflection API

JavaScript utilities with respect to emerging standard

A Firebase-Style Database ... Offline!

Inquirer number prompt

ES2019 spec-compliant String.prototype.trimStart shim.

ES2019 spec-compliant String.prototype.trimEnd shim.

React Hook & Utility Library

regexpu’s core functionality (i.e. `rewritePattern(pattern, flag)`), capable of translating ES6 Unicode regular expressions to ES5.

Set a function's length property

JS type check (TypeScript supported) functions like `isPlainObject() isArray()` etc. A simple & small integration.

amCharts 5 Geo Data

Twilio Video Processors JavaScript Library

ECMAScript parsing infrastructure for multipurpose analysis

Microsoft Azure SDK for JavaScript - Logger

ES spec-compliant shim for ArrayBuffer.prototype.slice

The fastest directory crawler & globbing alternative to glob, fast-glob, & tiny-glob. Crawls 1m files in < 1s

An **EXPERIMENTAL** Webpack plugin to enable "Fast Refresh" (also previously known as _Hot Reloading_) for React components.

WebAssembly binary format parser

Collection of codemod scripts that help update AWS SDK for JavaScript APIs

A collection of implementation for ECMAScript abstract operations

OAuth 2 / OpenID Connect Client API for JavaScript Runtimes

Inquirer multiline editor prompt

micromark extension to support MDX or MDX.js JSX

Core Inquirer prompt API

Inquirer confirm prompt

Listen to realtime updates to your PostgreSQL database

Flow types for the Javascript AST

hast utility to transform to estree (JavaScript AST) JSX

Style elements relative to other elements in CSS

Microsoft Azure Storage SDK for JavaScript - Blob

A convenient JavaScript snippet, which lets you create beautiful buttons, where people can add events to their calendars.

Runtime library for TypeScript helper functions

Node implementation of Deepgram's WebVTT and SRT formatting. Given a transcription, this package can return a valid string to store as WebVTT or SRT caption files.

Tests if ES6 @@toStringTag is supported.

WGSL Parser and Reflection library

An ESnext spec-compliant `Array.prototype.toSorted` shim/polyfill/replacement that works as far down as ES3.

`Iterator.prototype`, or a shared object to use.

Polyfills the ResizeObserver API and supports box size options from the latest spec

remark plugin to support MDX syntax

An API documentation generator for JavaScript.

Isomorphic storage client for Supabase.

An ESnext spec-compliant iterator helpers shim/polyfill/replacement that works as far down as ES3.

Use the :focus-visible pseudo-selector in CSS

Stringify is to `eval` as `JSON.stringify` is to `JSON.parse`

amCharts 4 Geo Data

Convert CSV to JSON

Style form elements when they are empty

Find and fix unused dependencies, exports and files in your TypeScript and JavaScript projects

Airbnb's ESLint config, following our styleguide

Fast, small, efficient JavaScript memoization lib to memoize JS functions

A JavaScript parser

Generate JavaScript-compatible regular expressions based on a given set of Unicode symbols or code points.

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

Array-slice method. Slices `array` from the `start` index up to, but not including, the `end` index.

micromark extension to support MDX or MDX JS expressions

Check if something can be an ecmascript (javascript) identifier name

Isomorphic Javascript client for Supabase

Newline character converter

Official React component for Font Awesome

Parses JavaScript objects into XML

Returns true if any values exist, false if empty. Works for booleans, functions, numbers, strings, nulls, objects and arrays.

Unfancy JavaScript

ECMAScript 5 compatibility shims for legacy JavaScript engines

Publish multiple editions for your JavaScript packages consistently and easily (e.g. source edition, esnext edition, es2015 edition)

Parse front-matter from a string or file. Fast, reliable and easy to use. Parses YAML front matter by default, but also has support for YAML, JSON, TOML or Coffee Front-Matter, with options to set custom delimiters. Used by metalsmith, assemble, verb and

Responsive, interactive and more accessible HTML5 canvas elements. Scrawl-canvas is a JavaScript library designed to make using the HTML5 canvas element easier, and more fun

Highly configurable, well-tested, JavaScript-based HTML minifier.

JavaScript Testing utilities for React

Provides TypeScript methods to map a JSON object to a JavaScript object on runtime

Standard AVL tree

micromark extension to support MDX JS import/exports

A JavaScript parser

JavaScript 3D library

Get and robustly cache all JS language-level intrinsics at first require time

Human-friendly process signals

Bootstrap 5 & React 18 UI KIT - 700+ components, MIT license, simple installation.

`Object.defineProperty`, but not IE 8's broken one.

Spectacular Test Runner for JavaScript.

browser-side require() the node way

Attach comments to estree nodes

`Object.getOwnPropertyDescriptor`, but accounts for IE's broken implementation.

Inquirer checkbox prompt

ES Object-related atoms: Object, ToObject, RequireObjectCoercible

A robust, ES3 compatible, "has own property" predicate.

Inquirer input text prompt

Inquirer select/list prompt

Inquirer password prompt

A less than 1KB css-in-js solution

Directed Graph

Inquirer rawlist prompt

Determine if the JS environment has `Symbol.toStringTag` support. Supports spec, or shams.

A simple cache for a few of the JS Error constructors.

A collection of dgeni packages for generating documentation from source code

Autocomplete prompt for inquirer

JavaScript Testing utilities for React

unist utility to get a position from an estree node

Robustly `.call.bind()` a function

Convenient React wrapper for the add to calendar button snippet, which lets you reliably create beautiful buttons, where people can add events to their calendars.

JavaScript Testing utilities for React

Directus SchemaBuilder for mocking/constructing a database schema based on code.

recma plugin to transform HTML (hast) to JS (estree)

Highly customizable notification snackbars (toasts) that can be stacked on top of each other

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

Support libs used across Appium packages

Airbnb's base JS ESLint config, following our styleguide

Robust call-bound JavaScript intrinsics, using `call-bind` and `get-intrinsic`.

serialize objects to javascript

Check if a string is a valid JavaScript expression

A query library for ECMAScript AST using a CSS selector like query language.

Microsoft Dynamic Proto Utility

JavaScript SVG parser and renderer on Canvas.

Web based JavaScript HTML WYSIWYG editor control.

ThinkNimble's Common Client-Side Utility Functions

A powerful and lightweight inversion of control container for JavaScript and Node.js apps powered by TypeScript.

A Jimp-compatible library for working with GIFs

Syntax highlights JavaScript code with ANSI colors to be printed to the terminal.

Is this value a JS SharedArrayBuffer?

recma plugin to add support for parsing and serializing JSX

Validate and visualize dependencies. With your rules. JavaScript, TypeScript, CoffeeScript. ES6, CommonJS, AMD.

recma plugin to serialize JavaScript

recma plugin to parse JavaScript

Gets the description of a Symbol. Handles `Symbol()` vs `Symbol('')` properly when possible.

Transform JSX in estrees to function calls (for react, preact, and most hyperscript interfaces)

Is this value a JS ArrayBuffer?

Which kind of boxed JS primitive is this?

Classify GPU's based on their benchmark score in order to provide an adaptive experience.

Escape strings for use as JavaScript string literals

A Broccoli plugin which transpile ES6 to readable ES5 by using babel.

Unbox a boxed JS primitive value.

PDF file parser that converts PDF binaries to JSON and text, powered by porting a fork of PDF.JS to Node.js

Simple JavaScript type-based method overloading.

esast utility to transform from estree

Get the byteOffset out of a DataView, robustly.

Broccoli plugin that allows you to filter files selected from an input node down based on regular expressions.

Get the ArrayBuffer out of a DataView, robustly.

A quick & dirty Gradle build file to JavaScript object parser

Interact with and control an embedded Vimeo Player.

Is this value a JS DataView? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.

Get the byteLength out of a DataView, robustly.

Create and modify PDF files with JavaScript

A pure javascript BMP encoder and decoder

Node.js library editing Windows Resource data

Is this an arguments object? It's a harder question than you think.

WebAssembly text format printer

Strip line and/or block comments from a string. Blazing fast, and works with JavaScript, Sass, CSS, Less.js, and a number of other languages.

AST utils for webassemblyjs

Javascript function that triggers browser to save javascript-generated content to a file

A collection of utilities and constants for NNS/SNS projects.

Edit a string with the users preferred text editor using $VISUAL or $ENVIRONMENT

Tesseract C++ API in Pure Javascript

[](https://www.npmjs.com/package/yamux-js) [](https://github.com/th-ch/yamux-js) [![GitHub

A pure javascript JPEG encoder and decoder

Allows user to run tests with exection-grid and navigate to private hosts and ips

An ESnext spec-compliant `Object.groupBy` shim/polyfill/replacement that works as far down as ES3.

Canvas to Blob is a polyfill for the standard JavaScript canvas.toBlob method. It can be used to create Blob objects from an HTML canvas element.

esast (and estree) utility to visit nodes

Highlight keywords using JavaScript. Intended for every use case. Can e.g. be used to mark text in search results.

A simple yet functional GraphQL client.

🚀 The OpenAPI to TypeScript codegen. Generate clients, SDKs, validators, and more.

Automation for Apps.

Like `extend` but only copies missing properties/values to the target object.

JavaScript Testing utilities for React

ES spec-compliant shim for TypedArray.prototype.slice

A prettier plugins to sort imports in provided RegEx order

Trie, prefix tree

Generate a table of contents based on the heading structure of a html document.

Client-side Bitcoin JavaScript library

A prettier plugins to sort imports in provided RegEx order

Inquirer core TS types

Highly configurable, well-tested, JavaScript-based HTML minifier.

Colors of Google's Material Design made available to coders

TypeScript shorties for the web

A lightweight, powerful javascript datetime picker

A reasonable collection of plugins to use alongside your main esLint configuration

🌈 Light, fast, and easy to use, dependencies free javascript syntax highlighter, with automatic language detection

the acorn javascript parser, preloaded with plugins for syntax parity with recent node versions

Client-side HTML-to-PDF rendering using pure JS

Fast document oriented javascript in-memory database

`AsyncIterator.prototype`, or a shared object to use.

Node.js library for Portable Executable format

Split JavaScript SDK common components

<!-- markdownlint-disable MD024 -->

Material Tailwind is an open-source library that uses the power of Tailwind CSS and React to help you build unique web projects faster and easier. The stunning design inspired by Material Design is a bonus!

simple scope analysis for javascript ASTs

ECMAScript parsing infrastructure for multipurpose analysis

Merge objects & other types recursively. A simple & small integration.

JavaScript and TypeScript library to interact with the Internet Computer

A collection of codemods to help auto format javascript

Vendored version of figures, for CJS compatibility

Parse binary files with a schema into nicely readable objects

Uses babel (babylon) to extract JavaScript code comments from a JavaScript string or file.

Microsoft Azure Storage SDK for JavaScript - Queue

Graph data structure.

Detect Filetype by bytes

Easy to use efficient .GIF parsing in javascript

Generates markdown API documentation from jsdoc annotated source code

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

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

Split SDK

Appium Configuration Schema

An ESnext spec-compliant `Array.prototype.toReversed` shim/polyfill/replacement that works as far down as ES3.

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

No-dependencies, low-level, high-performance JIT code generation package for JavaScript

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

JavaScript/TypeScript linter (ESLint wrapper) with great defaults

Determine whether an AST node is a reference

JavaScript Load Image is a library to load images provided as File or Blob objects or via URL. It returns an optionally scaled, cropped or rotated HTML img or canvas element. It also provides methods to parse image metadata to extract IPTC and Exif tags a

Generates CRC hashes for strings - for use by node redis clients to determine key slots.

A package of Essential JS 2 popup components such as Dialog and Tooltip that is used to display information or messages in separate pop-ups.

A lightweight carousel library with fluid motion and great swipe precision

Shared TypeScript Config for Appium

Check what’s defined in an estree scope

CloudEvents SDK for JavaScript

Utility for adding Functions files in Netlify Build

JavaScript library for formatting input text content when you are typing

A lightweight carousel library with fluid motion and great swipe precision

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.

Application that yada yada yada.

Utility for caching files in Netlify Build

Transforms jsdoc data into something more suitable for use as template input

JavaScript MD5 implementation. Compatible with server-side environments like Node.js, module loaders like RequireJS, Browserify or webpack and all web browsers.

Migrate older jQuery code to jQuery 3.0+