JSPM

Regular expression for matching JavaScript identifiers

Micro parser for detection of literal regexes

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

Simple templating using a config.json and regex patterns

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

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

Regular expression for matching JavaScript comments

A source code transpiler that enables the use of ES2015 Unicode regular expressions in ES5.

serialize objects to javascript

JavaScript parser, mangler/compressor and beautifier toolkit

ESLint rules to disallow unsafe regular expressions.

Escapes special characters in a string, for matching substrings with a RegExp instance.

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

Check if a string is a valid JavaScript identifier

A package to help you find out which of your `node_modules` aren't ES5 so you can add them to your transpilation steps.

Replace the comments in a string.

Optimized and powerful regexes for JavaScript

Broccoli plugin to replace a matched string with a replacement.

Parse code files and patch it without having to use an AST

Core Inquirer prompt API

Node.js library editing Windows Resource data

Simulate react-select events for react-testing-library

Simple wrapper around javascript replace with CLI usage support!

JavaScript RegExp doesn't work with Unicode characters out of the box. This small package fixes this issue. This is \p{L} equalent extracted from XRegExp.

Replace one val with another or all occurrences in an object recursively. A simple & small integration.

Convert a Regular Expression from one flavour to another.

Language tag parser

Smooch.io powered web messaging

A single / multiple, categorizable, customizable, localizable and searchable item picker (drop-down) component for react native which supports both Android & iOS.

Jest preset used by a MC application

JavaScript library for formatting input text content when you are typing

Runtime library for TypeScript helper functions

JavaScript image annotation

An ESnext spec-compliant shim/polyfill/replacement for all Well-Known Symbols that works in any environment with Symbols.

A collection of useful regular expressions.

Analyze the JavaScript loaded by a website

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

A JavaScript parser

TypeScript is a language for application scale JavaScript development

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

Human-friendly process signals

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

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

An Esprima-compatible JavaScript parser built on Acorn

ECMAScript parsing infrastructure for multipurpose analysis

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

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

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

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.

ES Object-related atoms: Object, ToObject, RequireObjectCoercible

A JavaScript text diff implementation.

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

An AST-based pattern checker for JavaScript.

Robustly `.call.bind()` a function

An ESLint custom parser which leverages TypeScript ESTree

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

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

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

Set a function's length property

ESLint JavaScript language implementation

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

Which kind of boxed JS primitive is this?

ES2019 spec-compliant String.prototype.trimStart shim.

Is this value a JS SharedArrayBuffer?

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

ES2019 spec-compliant String.prototype.trimEnd shim.

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

Is this value a JS ArrayBuffer?

Unbox a boxed JS primitive value.

ES spec-compliant shim for ArrayBuffer.prototype.slice

A collection of common interactive command line user interfaces.

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

Modified version of Nick Drewe's tc or sc checker.

Get the byteOffset out of a DataView, robustly.

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.

Replace Strings like a boss

Get the ArrayBuffer out of a DataView, robustly.

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

Get the byteLength out of a DataView, robustly.

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

WebAssembly text format printer

AST utils for webassemblyjs

Simple i18n translation and localization components and helpers for React.

WebAssembly binary format parser

Experimental client-side JavaScript library to report errors to Stackdriver Error Reporting

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

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

Pretty-print JSON data into HTML to indent and colorize (written in functional TypeScript)

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

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

Spec-compliant polyfill for String.prototype.replaceAll ESnext proposal

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

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

Flow types for the Javascript AST

Polyfill for Metadata Reflection API

Inquirer core TS types

JavaScript library for DOM operations

Tooling which enables you to use TypeScript with ESLint


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

Microsoft Azure SDK for JavaScript - Aborter

Vendored version of figures, for CJS compatibility

Stripe VAT id handling

Unofficial Hyperliquid API SDK for all major JS runtimes, written in TypeScript. Fork with Node.js 20.18.0+ compatibility.

Inquirer confirm prompt

ECMAScript extensions and shims

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

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

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

JavaScript utilities with respect to emerging standard

A lightweight carousel library with fluid motion and great swipe precision

Determine whether an AST node is a reference

A lightweight carousel library with fluid motion and great swipe precision

Reactive utilities for Embla Carousel

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

Inquirer prompts, combined in a single package

A collection of implementation for ECMAScript abstract operations

Inquirer select/list prompt

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

Inquirer checkbox prompt

Inquirer rawlist prompt

Inquirer password prompt

Inquirer checkbox prompt

Javascript Redis protocol (RESP) parser

Inquirer search prompt

Error classes used in node_redis

Inquirer input text prompt

Inquirer number prompt

Inquirer multiline editor prompt

Use the :focus-visible pseudo-selector in CSS

Style elements relative to other elements in CSS

Airbnb's base JS ESLint config, following our styleguide

Microsoft Azure SDK for JavaScript - Logger

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

Adds a comprehensive Camel-Case (and Pascal-Case) converter to the String's prototype

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

Style form elements when they are empty

A JavaScript (JS) Map or Similar object polyfill if Map is not available.

npm package to remove all sensitive info from data passed

A JavaScript parser

Parses CSS inline style to JavaScript object (camelCased).

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

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.

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

Jspreadsheet is a lightweight, vanilla javascript data grid plugin to create amazing web-based interactive tables and spreadsheets compatible with other spreadsheet software.

Create custom ESLint rules based on code samples. Utilizing CodeQue - structural code search engine.

_@hutechwebsite/quas-iure-iste-magni_ offers a regular expression to match all emoji symbols and sequences (including textual representations of emoji) as per the Unicode Standard. It’s based on [_emoji-test-regex-pattern_](https://github.com/mathiasbynen

WebAssembly text format parser

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

Library to parse dependencies for Closure Library. Also includes a CLI to generate deps.js files for Closure Library's debug loader.

Is the value an object or an array but not null?

Censor or highlight words and other patterns intelligently.

OAuth 2 / OpenID Connect Client API for JavaScript Runtimes

Isomorphic storage client for Supabase.

A pure javascript JPEG encoder and decoder

Isomorphic Javascript client for Supabase

Listen to realtime updates to your PostgreSQL database

Readable regex transformations, validations, and utilities with both static and chainable API.

> **For users of the deprecated custom widget library** > > You should pin your `package.json` to version `0.0.9` of this module to ensure that your code continues to work. > > `npm install geckoboard@0.0.9 --save`

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

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

Airbnb's ESLint config, following our styleguide

Transforms styleName to className using compile time CSS module resolution.

A library for code common to my various NodeJS/Browser projects.

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

remark plugin to support MDX syntax

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

Is this value a JS regex?

Natural Sort algorithm for Javascript - Version 0.7 - Released under MIT license

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

Spectacular Test Runner for JavaScript.

Escape strings for use as JavaScript string literals

Javascript SDK for Akahu

A less than 1KB css-in-js solution

Microsoft Azure Storage SDK for JavaScript - Blob

JavaScript SVG parser and renderer on Canvas.

Professional JavaScript utility to generate flexible and accurate regex patterns for data validation

micromark extension to support MDX or MDX.js JSX

Parses JavaScript objects into XML

unist utility to get a position from an estree node

esast (and estree) utility to visit nodes

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

micromark extension to support MDX JS import/exports

micromark extension to support MDX or MDX JS expressions

CLI for the swc project

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

ES spec-compliant shim for TypedArray.prototype.slice

hast utility to transform to estree (JavaScript AST) JSX

An API documentation generator for JavaScript.

JavaScript 3D library

Generate any file structure - from single components to entire app boilerplates, with a single command.

Attach comments to estree nodes

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

Tools for declarative fetching

Airbnb's ESLint config with TypeScript support

<div align="center"> <h1>Is this an invitation to a Discord server? ➕</h1> <p> This module checks whether a string is a Discord server invitation. If it is, it fetches information from the API to find out more about the server.

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

Check if a string is a valid JavaScript expression

Adaptation of react-addons-shallow-compare, for independent usage

Tests if ES6 Symbol is supported.

CSRF token middleware for ExpressJS

Tests if ES6 @@toStringTag is supported.

JavaScript Testing utilities for React

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

Newline character converter

Colors of Google's Material Design made available to coders

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

browser-side require() the node way

Create and modify PDF files with JavaScript

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

A pure javascript BMP encoder and decoder

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

walk an AST, quickly

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A prettier plugins to sort imports in provided RegEx order

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

get a list of identifiers that are initialised by a JavaScript AST node.

Unfancy JavaScript

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

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

Multiline code search for every language. Structural code search for JavaScript, TypeScript, HTML and CSS

ECMAScript 5 compatibility shims for legacy JavaScript engines

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

A Jimp-compatible library for working with GIFs

Saga middleware for Redux to handle Side Effects

Autocomplete prompt for inquirer

A CLI tool to find unused components, functions, variables, and files in React and Next.js projects.

Get the last or last n elements in an array.

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

Get all but the last element or last n elements of an array.

Detects the JavaScript libraries running on a page

Check what’s defined in an estree scope

recma plugin to add support for parsing and serializing JSX

esast utility to transform from estree

CloudEvents SDK for JavaScript

recma plugin to add support for parsing and serializing JSX

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

recma plugin to serialize JavaScript

recma plugin to parse JavaScript

find undeclared identifiers and property accesses in a javascript file.

Javascript/Typescript library/cli to replace placeholders in an javascript object

Saga middleware for Redux to handle Side Effects

Client/server side PDF printing in pure JavaScript

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

JavaScript Testing utilities for React

JavaScript Testing utilities for React

A lightweight, powerful javascript datetime picker

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