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.
ESLint
The pluggable JavaScript and TypeScript linter that finds and fixes code problems through a fully customizable, plugin-based rule engine.
Vite
Next-generation frontend build tool with an instant dev server, lightning-fast HMR, and optimized production builds.
prettier
An opinionated code formatter that enforces consistent style across every language your project speaks.
Vitest
A blazing-fast unit testing framework powered by Vite, with Jest-compatible APIs out of the box.
typescript-eslint
The official meta-package bundling the TypeScript ESLint parser, plugin, and rule presets behind a single typed config() helper.
@vitejs/plugin-react
The official Vite plugin for React with Babel-powered Fast Refresh and JSX transforms
tsx
A drop-in replacement for the node CLI that runs TypeScript and ESM files instantly, powered by esbuild.
eslint-config-prettier
Disables ESLint stylistic rules that conflict with Prettier, so the two tools never fight over formatting.
jest
Delightful JavaScript testing with zero-config setup, snapshots, mocking, and coverage
esbuild
An extremely fast JavaScript and CSS bundler and minifier written in Go.
ts-node
TypeScript execution engine and REPL for Node.js that runs .ts files directly, without a separate compile step.
eslint-plugin-react
React-specific linting rules for ESLint that catch JSX bugs, enforce Hooks conventions, and keep prop usage consistent.
lint-staged
Run linters and formatters only against the files staged in git, so a slow full-project lint never blocks a commit.
cross-env
Cross-platform CLI for setting environment variables in npm scripts without worrying about Windows vs POSIX syntax.
eslint-plugin-import
ESLint rules that validate ES module import/export syntax and catch broken paths before they hit your build.
Sass
The reference Dart implementation of Sass, the mature CSS preprocessor that compiles SCSS and indented syntax to standards-compliant CSS.
concurrently
Run multiple terminal commands in parallel, with color-coded output and cross-platform support.
eslint-plugin-prettier
Run Prettier as an ESLint rule that reports formatting differences as autofixable lint errors.
webpack
A static module bundler that builds a dependency graph of your project's modules and packages them into optimized browser bundles
tsup
Zero-config TypeScript library bundler powered by esbuild
Storybook
The industry-standard workshop for building, documenting, and testing UI components in isolation, across every major frontend framework.
Uvicorn
A lightning-fast ASGI server for Python, built on uvloop and httptools.
webpack-cli
The official command-line interface for webpack, adding build, watch, serve, and config-validation commands to any project.
