Get Started

Welcome to Bun Installation Quickstart TypeScript TypeScript 6 and 7

Watch Mode Debugging REPL bunfig.toml File Types Module Resolution JSX Auto-install Plugins File System Router

DNS Fetch TCP UDP

Cookies File I/O Streams Binary Data Archive SQL SQLite S3 Redis Workers Environment Variables Shell Spawn WebView Cron Node-API FFI C Compiler Transpiler CSRF Protection Secrets Console TOML YAML Markdown JSON5 JSONL HTMLRewriter Image Hashing Glob Semver Color Utils Globals Bun APIs Web APIs Node.js Compatibility

Standards & CompatibilityNetworking

TCP

Use Bun's native TCP API to implement performance-sensitive systems like database clients, game servers, or anything that needs to communicate over TCP (instead of HTTP)

Fetch

Send HTTP requests with Bun's fetch API

UDP

Use Bun's UDP API to implement services with advanced real-time requirements, such as voice chat.

On this page

Start a server (Bun.listen())Create a connection (Bun.connect())Hot reloading Buffering