Step-by-Step: Migrating from Node.js 21 to Bun 1.2 for Your Backend APIs

Step-by-Step: Migrating from Node.js 21 to Bun 1.2 for Your Backend APIs Why Migrate to Bun 1.2? Bun 1.2 is a modern JavaScript runtime built for speed, offering native TypeScript support, a built-in bundler, test runner, and package manager. Compared to Node.js 21, Bun delivers up to 3x faster startup times, lower memory usage, and seamless compatibility with most Node.js APIs. For backend APIs, this translates to reduced infrastructure costs, faster response times, and simpler tooling. Pre-Mig