Overview
Bun is a modern JavaScript runtime built from scratch using the Zig programming language and the JavaScriptCore engine (used by Safari). It is designed to be a drop-in replacement for Node.js but with significantly better performance.
Key Features
- Extreme Speed: Often multiple times faster than Node.js and Deno in benchmarks.
- All-in-One: Includes a runtime, package manager (compatible with npm), bundler, and test runner.
- Node.js Compatibility: Aims for high compatibility with existing Node.js APIs and packages.
- Native TypeScript & JSX Support: Directly executes TS and JSX files.
Impact
Bun has generated significant excitement in the community due to its ambitious goal of unifying and speeding up the entire JavaScript development workflow.