About Bun:

Bun is a fast, incrementally adoptable all-in-one JavaScript, TypeScript & JSX toolkit. Use individual tools like bun test or bun install in Node.js projects, or adopt the complete stack with a fast JavaScript runtime, bundler, test runner, and package manager built in. Bun aims for 100% Node.js compatibility.

1.3 release:

The highlights:

  • Full‑stack dev server (with hot reloading, browser -> terminal console logs) built into Bun.serve()
  • Builtin MySQL client, alongside our existing Postgres and SQLite clients
  • Builtin Redis client
  • Better routing, cookies, WebSockets, and HTTP ergonomics
  • Isolated installs, catalogs, minimumRelease, and more for workspaces
  • Many, many Node.js compatibility improvements