What problem does it solve?
Bun streamlines JavaScript/TypeScript development by replacing the usual Node.js + npm + bundler toolchain with a single fast runtime and workflow.
Core Features & Use Cases
- Run TypeScript/JSX instantly without a separate compile step, using Bun’s on-the-fly execution.
- Install and manage dependencies faster with
bun install, producing bun.lock for reproducible environments.
- Test and bundle efficiently with Jest-compatible testing and
bun build for browser/server outputs.
Use it when you want quick startup, faster dependency installs, and a unified toolchain for development, testing, and production packaging.
Quick Start
Use Bun to install dependencies, run your TypeScript entry file, and validate it with tests by asking: "Set up and run this project with Bun, installing deps, running the main script, and executing bun test."