Bundle, transpile, install and run JavaScript & TypeScript projects — all in Bun. Bun is a new JavaScript runtime with a native bundler, transpiler, task runner and npm client built-in.

Bun is competing with Node and Deno, with the following goals:

1. Start fast (it has the edge in mind).
2. New levels of performance (extending JavaScriptCore, the engine).
3. Being a great and complete tool (bundler, transpiler, package manager).

I like those goals, and it’s designed to be a drop-in replacement for your current runtime.