Bun Has a Free All-in-One API That Replaces Node, npm, and webpack

Bun is a JavaScript runtime, bundler, test runner, and package manager — all in one binary. It runs Node.js code 3-4x faster with zero configuration. Package Manager (Replaces npm/yarn/pnpm) bun install # 10-100x faster than npm install bun add express # Add dependency bun remove lodash # Remove dependency bun update # Update all Runtime (Replaces Node.js) bun run server.ts # Run TypeScript directly — no tsc needed bun run index.jsx # Run JSX directly Built-in APIs HTTP Server (No Express Needed) Bun . serve ({ port : 3000 , fetch ( req ) { const url = new URL ( req . url ); if ( url . pathname === ' /api/hello ' ) { return Response . json ({ message : ' Hello! ' }); } if ( url . pathname === ' /api/stream ' ) { return new Response ( new ReadableStream ({ start ( controller ) { controller . enqueue ( ' chunk 1 \n ' ); controller . enqueue ( ' chunk 2 \n ' ); controller . close (); } }) ); } return new Response ( ' Not found ' , { status : 404 }); } }); File I/O (Fastest in Any Runtime)