Overview Bun is a fast JavaScript all-in-one toolkit Develop, test, run, and bundle JavaScript & TypeScript projects—all with Bun. Bun is an all-in-one JavaScript runtime & toolkit designed for speed, complete with a bundler, test runner, and Node.js-compatible package manager. Notes Configuration for Mac M1 title: Install $ brew tap oven-sh/bun # for macOS and Linux $ brew install bun $ bun --v..