unjs

SKILL.md

Comprehensive ecosystem of single-purpose JavaScript libraries for universal, runtime-agnostic development.

Covers 50+ packages across HTTP frameworks (H3, Nitro), utilities (path, URL, hashing), storage, CLI tools, and build systems

Supports multiple runtimes: Node.js, browsers, edge environments, Deno, Bun, and Cloudflare Workers

Includes specialized tools for image processing, WebAssembly, PDF handling, QR codes, crypto, and database connectivity

Designed for composability: libraries work independently or together to build universal JavaScript applications

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