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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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.
dotenv
Loads environment variables from a .env file into process.env for Node.js apps.
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.
Axios
Promise-based HTTP client for the browser and Node.js with interceptors, automatic transforms, and cancellation
Express
The fast, unopinionated, minimalist web framework for Node.js
Next.js
The React framework for production: file-based routing, server rendering, and Rust-powered builds.
AWS SDK for JavaScript (S3 Client)
The official modular AWS SDK v3 client for Amazon S3, with TypeScript-first APIs and streaming support.
lint-staged
Run linters and formatters only against the files staged in git, so a slow full-project lint never blocks a commit.
ws
A simple, blazing-fast, thoroughly tested WebSocket client and server library for Node.js.
Marked
A fast, low-level Markdown compiler that parses CommonMark and GFM into HTML in Node.js, browsers, or the CLI.
sharp
High-performance Node.js image processing powered by libvips, built for fast resizing and format conversion.
i18next
The internationalization framework for JavaScript, with zero runtime dependencies and a pluggable ecosystem for every environment.
js-yaml
A fast, complete YAML 1.2 and 1.1 parser and serializer for JavaScript.
yaml
A definitive TypeScript parser and stringifier for YAML, supporting 1.1 and 1.2 with comment and CST access.
Commander.js
The complete, battle-tested framework for building Node.js command-line interfaces.
OpenTelemetry JavaScript (@opentelemetry/api)
Vendor-neutral tracing, metrics, and context API that libraries and apps instrument once, so any OpenTelemetry-compatible backend can consume it.
OpenAI
The official Node.js/TypeScript client for the OpenAI API, auto-generated from OpenAI's own OpenAPI spec.
fs-extra
Drop-in replacement for Node's fs module adding copy, remove, mkdirs, and JSON helpers with native promise support.
ioredis
A robust, full-featured Redis client for Node.js with built-in Cluster, Sentinel, and TypeScript support.
@codemirror/view
The DOM view layer for the CodeMirror 6 code editor, handling rendering, input, and editor chrome.
cors
Node.js CORS middleware for Express and Connect that sets standards-compliant headers to control cross-origin browser access.
CodeMirror State
Immutable document, selection, and transaction data structures for the CodeMirror code editor
