Bun Has a Free API: The All-in-One JavaScript Runtime That Replaces Node.js

Why Bun Bun is a JavaScript runtime, package manager, bundler, and test runner — all in one. Written in Zig with JavaScriptCore engine, it is 3-10x faster than Node.js for most tasks. Install curl -fsSL https://bun.sh/install | bash Run JavaScript/TypeScript # Run TypeScript directly — no tsc needed bun run server.ts # Run JSX bun run app.tsx Package Manager (Fastest) # Install dependencies (10-100x faster than npm) bun install # Add package bun add express # Dev dependency bun add -d typescript HTTP Server const server = Bun . serve ({ port : 3000 , async fetch ( req ) { const url = new URL ( req . url ); if ( url . pathname === ' /api/users ' ) { const users = await getUsers (); return Response . json ( users ); } return new Response ( ' Hello from Bun! ' , { status : 200 }); }, }); console . log ( `Server running at http://localhost: ${ server . port } ` ); Built-in SQLite import { Database } from ' bun:sqlite ' ; const db = new Database ( ' myapp.db ' ); db . run ( ' CREATE TABLE I