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Find and fix problems in your JavaScript code.

Prettier is an opinionated code formatter.

☕️ simple, flexible, fun javascript test framework for node.js & the browser

Node.js API for Chrome

A modern JavaScript utility library delivering modularity, performance, & extras.

The repository for high quality TypeScript type definitions.

🐠 Babel is a compiler for writing next generation JavaScript.

A `rm -rf` util for nodejs

🔀 Cross platform setting of environment scripts

The reference implementation of Sass, written in Dart.

Git hooks made easy 🐶 woof!

A reference implementation of GraphQL for JavaScript

A bundler for javascript and friends. Packs many modules into a few bundled assets. Code Splitting allows for loading parts of the application on demand. Through "loaders", modules can be CommonJs, AMD, ES6 modules, CSS, Images, JSON, Coffeescript, LESS, ... and your custom stuff.

the Istanbul command line interface

Next-generation ES module bundler

ESLint plugin with rules that help validate proper imports.

The most popular HTML, CSS, and JavaScript framework for developing responsive, mobile first projects on the web.

TypeScript execution and REPL for node.js

Turns off all rules that are unnecessary or might conflict with Prettier.

Test spies, stubs and mocks for JavaScript.

Webpack's Command Line Interface

Fast, unopinionated, minimalist web framework for node.

BDD / TDD assertion framework for node.js and the browser that can be paired with any testing framework.

sparkles Monorepo for all the tooling which enables ESLint to support TypeScript

🖍 Terminal string styling done right

Async utilities for node and the browser

A CLI tool to run multiple npm-scripts in parallel or sequential.

A Jest transformer with source map support that lets you use Jest to test projects written in TypeScript.

JavaScript YAML parser and dumper. Very fast.

glob functionality for node.js

A light-weight module that brings the Fetch API to Node.js

Loads environment variables from .env for nodejs projects.

a glob matcher in javascript

Bootstrap components built with React

Serves a webpack app. Updates the browser on changes. Documentation

Standard Library

📦 Babel loader for webpack

An extremely fast bundler for the web

React-specific linting rules for ESLint

Additional ESLint's rules for Node.js

yargs the modern, pirate-themed successor to optimist.

Transforming styles with JS plugins

Delete files and directories

A toolkit with common assertions and mocks that plays nicely with the standard library

Temporary file and directory creator for node.js

process information for node.js and browsers

🍣 The one-stop shop for official Rollup plugins

The library for web and native user interfaces.

🚫💩 — Run linters on git staged files

A simple javascript utility for conditionally joining classNames together

HTTP server mocking and expectations library for Node.js

A JavaScript Mock Date object that can be used to change when "now" is.

Rollup plugin to minify generated bundle

Parse CSS and add vendor prefixes to rules by Can I Use

A benchmarking library. As used on

🐐 Simple and complete React DOM testing utilities that encourage good testing practices.

A JavaScript implementation of various web standards, for use with Node.js

Work with Semantic Versions in Go

A tiny JavaScript debugging utility modelled after Node.js core's debugging technique. Works in Node.js and web browsers

A low-level toolkit to create floating elements. Tooltips, popovers, dropdowns, and more

tokyo_tower A wrapper for Babel's parser used for ESLint (renamed to @babel/eslint-parser)

sqlite3 driver for go using database/sql

Node.js test runner that lets you develop with confidence 🚀

❤️ JavaScript/TypeScript linter (ESLint wrapper) with great defaults

An identity object using ES6 proxies. Useful for mocking webpack imports like CSS Modules.

Monitor for any changes in your node.js application and automatically restart the server - perfect for development

owl Custom jest matchers to test the state of the DOM

Jest mock for fetch

Spectacular Test Runner for JavaScript

A simple, yet elegant, HTTP library.

Shared TypeScript config for my projects

Storybook is a frontend workshop for building UI components and pages in isolation. Made for UI development, testing, and documentation.

⏳ Modern JavaScript date utility library ⌛️

Global coverage report uploader for Codecov in NodeJS

The semver parser for node (the one npm uses)

A task runner / simpler Make alternative written in Go

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

Recursively mkdir, like `mkdir -p`, but in node.js

Implements support for double star (**) matches in golang's path.Match and filepath.Glob.

A Jest reporter that creates compatible junit xml files

A mighty CSS linter that helps you avoid errors and enforce conventions.

A small, fast, JavaScript-based JavaScript parser

Promise based HTTP client for the browser and node.js

A Karma plugin. Launcher for Chrome and Chrome Canary.

📓 Lint commit messages

❯ Lightweight, beautiful and user-friendly interactive prompts

The fastest JSON schema Validator. Supports JSON Schema draft-04/06/07/2019-09/2020-12 and JSON Type Definition (RFC8927)

A pack of Eleventy plugins for generating an RSS feed.

A Karma plugin. Adapter for Mocha testing framework.

Implements a deep pretty printer for Go data structures to aid in debugging

Adds source map support to node.js (for stack traces)

Sinon for karma

Chai for Karma

ESLint plugin for Prettier formatting

React components for Chart.js, the most popular charting library

trophy Automate versioning and CHANGELOG generation, with and

🕷 Super-agent driven library for testing node.js HTTP servers using a fluent API. Maintained for @forwardemail, @ladjs, @spamscanner, @breejs, @cabinjs, and @lassjs.

The pytest framework makes it easy to write small tests, yet scales to support complex functional testing