Bun LLM Documentation

Bun provides comprehensive LLM-optimized documentation at https://bun.sh/llms.txt.

When to Use

Fetch this documentation when:

• Setting up a new Bun project or migrating from Node.js
• Working with Bun-specific APIs (SQLite, S3, Redis, FFI)
• Configuring the bundler, minifier, or bytecode caching
• Writing tests with bun test
• Using Bun's shell scripting API
• Deploying to cloud platforms (AWS Lambda, Vercel, Railway)

Key Topics Covered

• Runtime: File I/O, HTTP Server, WebSockets, Workers, Streams
• Bundler: CSS, HTML, Hot Reloading, Macros, Plugins, Executables
• Package Manager: Install, Add, Update, Workspaces, Lockfile
• Testing: Coverage, Mocks, Snapshots, DOM testing, Jest migration
• Ecosystem: Elysia, Express, Hono, Drizzle, Prisma, Next.js, Remix

Quick Reference

// Fetch Bun docs via Firecrawl
const docs = await firecrawl.scrape({
  url: "https://bun.sh/llms.txt",
  formats: ["markdown"]
});

Key APIs Documented

Module	Description
Bun.serve	HTTP server with WebSocket support
Bun.file	File I/O with lazy loading
Bun.build	JavaScript/TypeScript bundler
Bun.$	Shell scripting API
Bun.sql	SQL database client
bun:sqlite	SQLite database
bun:ffi	Foreign function interface

Related Skills

• elysia-llm-docs - Elysia web framework
• effect-patterns - Effect TypeScript patterns