Bun 1.0 is an all-in-one toolkit for running, building, testing, and debugging JavaScript and TypeScript. It aims to eliminate the slowness and complexity that has accumulated in JavaScript tooling over the years without disregarding the strengths of the language. Bun replaces multiple tools like Node.js, transpilers, bundlers, package managers, and testing libraries, offering a faster and more efficient developer experience. It is compatible with existing Node.js applications and npm packages and has built-in support for web standard APIs. Bun also boasts impressive speed, supports TypeScript and JSX, and includes features like hot reloading and plugins. It can serve as a test runner, bundler, and package manager. Bun’s Windows build is experimental, and the team is continuously working to improve it. Overall, Bun 1.0 marks the beginning of a journey towards a new way of deploying JavaScript and TypeScript to production.
https://bun.sh/blog/bun-v1.0