Bun

• not full node compatibility, still buggy especially test runner, not production ready

benefits

• dropin node replacement that works with package.json

• Benefits over Node

  • bun run watches and restarts automatically

  • typescript and jsx first class so runnable/transpiled in bun and respects tsconfig

  • Built-in package manager, test runner, bundler, and api for server

• Bun and Node.js are both JavaScript runtimes, but they have some key differences:

  • Node.js is primarily written in C++, while Bun is written in Zig

starting server builtin

const server = Bun.serve({
  port: 3000,
  fetch(request) {
    return new Response("Welcome to Bun!");
  },
});

console.log(`Listening on localhost:${server.port}`);