Bun just killed Node.js

Bun is an all-in-one JavaScript runtime that consolidates execution, bundling, package management, and testing into a single binary. Built with Zig and JavaScriptCore instead of V8, it eliminates the overhead of multiple tools parsing the same code. Key features include native TypeScript support without compilation, integrated bundler with tree-shaking and code-splitting, content-addressable package caching, and built-in test runner. By sharing internal representations and optimizing at the systems level, Bun achieves faster cold starts, quicker dependency installs, and improved development workflows compared to traditional Node.js toolchains.