Open Source Packages
Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.
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TypeScript
A strongly typed superset of JavaScript that compiles to clean, portable JavaScript.
React
The declarative, component-based JavaScript library for building fast, interactive user interfaces on the web and in native apps.
React DOM
React's official renderer for the DOM and server — createRoot, hydrateRoot, and streaming SSR in one package.
ESLint
The pluggable JavaScript and TypeScript linter that finds and fixes code problems through a fully customizable, plugin-based rule engine.
prettier
An opinionated code formatter that enforces consistent style across every language your project speaks.
postcss
A CSS transformation engine that parses styles into an AST, letting JS plugins lint, prefix, and rewrite CSS — the foundation beneath Autoprefixer, Tailwind, and 200+ other tools.
typescript-eslint
The official meta-package bundling the TypeScript ESLint parser, plugin, and rule presets behind a single typed config() helper.
Playwright
Cross-browser end-to-end web testing and browser automation with a single API for Chromium, Firefox, and WebKit.
dotenv
Loads environment variables from a .env file into process.env for Node.js apps.
lucide-react
1,700+ tree-shakeable, customizable SVG icon components for React applications
@vitejs/plugin-react
The official Vite plugin for React with Babel-powered Fast Refresh and JSX transforms
date-fns
Modern JavaScript date utility library with 200+ pure, immutable functions
jsdom
A pure-JavaScript implementation of the WHATWG DOM and HTML standards for Node.js.
React Testing Library
Simple and complete React DOM testing utilities that encourage good testing practices.
Lodash
A modern JavaScript utility library delivering modularity, performance, and extras for arrays, objects, and functions.
Axios
Promise-based HTTP client for the browser and Node.js with interceptors, automatic transforms, and cancellation
TanStack Query
Hooks-based async state management for fetching, caching, and syncing server data in React.
Radix UI
Unstyled, accessible React UI primitives for building your own design system.
eslint-config-prettier
Disables ESLint stylistic rules that conflict with Prettier, so the two tools never fight over formatting.
React Router
A multi-strategy router for React, from a lightweight library to a full SSR framework.
jest-dom
Custom Jest matchers for asserting on the state of the DOM in your tests.
react-markdown
Safely render Markdown as React elements, no dangerouslySetInnerHTML required
@babel/core
The core JavaScript compiler that transforms next-generation syntax into code every browser and runtime can understand.
Express
The fast, unopinionated, minimalist web framework for Node.js
