unjs

UnJS (Unified JavaScript) is an ecosystem of high-quality, single-purpose JavaScript libraries and tools designed to work together and independently across any environment. These skills cover the core packages and their practical usage patterns for building universal JavaScript applications. The skill is based on UnJS website, generated at 2026-01-31. Core References HTTP & Server Topic Description Reference H3 Framework Minimal HTTP framework for high performance and portability core-h3 Nitro Server Universal web server framework that runs anywhere core-nitro Listhen Elegant HTTP listener for Node.js and edge environments core-listhen Utilities Topic Description Reference Defu Recursive default property assignment core-defu Destr Fast and secure JSON.parse alternative core-destr Ohash Fast hashing library based on murmurhash3 core-ohash Pathe Cross-platform path utilities (Node.js path replacement) core-pathe UFO URL utilities for parsing, formatting, and manipulation core-ufo Scule String case conversion utilities (camelCase, kebab-case, etc.) core-scule Build Tools Topic Description Reference Unbuild Unified JavaScript build system core-unbuild Mkdist Generate distribution files from source core-mkdist Unplugin Unified plugin system for Vite, Rollup, webpack, esbuild, and more core-unplugin Features Storage & Data Topic Description Reference Unstorage Async key-value storage API with multiple drivers features-unstorage Environment & Runtime Topic Description Reference Unenv Convert JavaScript code to be runtime agnostic features-unenv Std-env Standard environment variables utilities features-std-env HTTP Client Topic Description Reference Ofetch Better fetch API for Node.js, browser, and workers features-ofetch Routing Topic Description Reference Radix3 Lightweight and fast router based on Radix Tree features-radix3 CLI & Tools Topic Description Reference Citty Elegant CLI builder with type-safe commands features-citty Giget Download templates and git repositories features-giget Hooks & Context Topic Description Reference Hookable Awaitable hooks system for plugins and extensions features-hookable Unctx Composables pattern in vanilla JavaScript features-unctx Crypto & Security Topic Description Reference Uncrypto Universal crypto API for Node.js, browser, and edge features-uncrypto Module System Topic Description Reference Mlly ECMAScript module utilities for Node.js features-mlly Unimport Auto-import APIs in modules features-unimport Type System Topic Description Reference Untyped Generate types and markdown from config objects features-untyped Logging & Console Topic Description Reference Consola Elegant console wrapper with multiple reporters features-consola Documentation & Markdown Topic Description Reference Automd Automated markdown maintainer features-automd Changelogen Generate beautiful changelogs using conventional commits features-changelogen Mdbox Simple markdown utilities features-mdbox Undocs Minimal documentation theme and CLI for UnJS projects features-undocs Configuration Topic Description Reference C12 Smart configuration loader features-c12 Confbox Compact and high quality YAML, TOML, JSONC and JSON5 parsers features-confbox Rc9 Read/write config couldn't be easier features-rc9 HTTP & WebSocket Topic Description Reference Httpxy Full-featured HTTP and WebSocket proxy for Node.js features-httpxy Crossws Cross-platform WebSocket servers for Node.js, Deno, Bun and Cloudflare Workers features-crossws Cookie-es ESM cookie serializer and deserializer features-cookie-es Image Processing Topic Description Reference IPX High performance, secure and easy to use image proxy based on Sharp and libvips features-ipx Image-meta Detect image type and size using pure JavaScript features-image-meta Jimp-compact Lightweight version of Jimp - image processing library features-jimp-compact Fontaine Automatic font fallback based on font metrics features-fontaine Code Generation & AST Topic Description Reference Magicast Programmatically modify JavaScript and TypeScript source codes features-magicast Magic-regexp A compiled-away, type-safe, readable RegExp alternative features-magic-regexp Knitwork-X Utilities to generate safe JavaScript code (actively maintained fork) features-knitwork Jiti Runtime TypeScript and ESM support for Node.js features-jiti Database & Storage Topic Description Reference Db0 Lightweight SQL connector features-db0 Mongoz Zero config MongoDB server features-mongoz Utilities Topic Description Reference Fs-memo Easy persisted memo object for Node.js features-fs-memo Get-port-please Get an available open port features-get-port-please Perfect-debounce Debounce promise-returning and async functions features-perfect-debounce Serve-placeholder Smart placeholder for missing assets features-serve-placeholder Theme-colors Easily generate color shades for themes features-theme-colors Package Management Topic Description Reference Nypm Unified package manager for Node.js features-nypm Pkg-types Node.js utilities and TypeScript definitions for package.json and tsconfig.json features-pkg-types Bundle-runner Run webpack bundles in Node.js with optional VM sandboxing features-bundle-runner Web APIs Topic Description Reference Unhead Universal document head tag manager features-unhead Ungh Unlimited access to GitHub API features-ungh Unpdf Utilities to work with PDFs in Node.js, browser and workers features-unpdf Unwasm WebAssembly tools for JavaScript features-unwasm Uqr Generate QR Code universally, in any runtime, to ANSI, Unicode or SVG features-uqr Untun Tunnel your local HTTP(s) server to the world powered by Cloudflare Quick Tunnels features-untun Node-fetch-native A better redistribution of node-fetch features-node-fetch-native Build Tools (Additional) Topic Description Reference Webpackbar Elegant progress bar and profiler for webpack 3, 4 and 5 features-webpackbar Nanotar Tiny and fast Tar utils for any JavaScript runtime features-nanotar