Clean API Design in Node.js: A Practical Guide (opens in new tab)

Most Node.js APIs start the same way. A server.js file. A few routes. Maybe an app.js if you've read a tutorial. Everything in one place because the app is small and there's no reason to complicate it yet. Then the app grows. Routes multiply. Business logic leaks into route handlers. Error handling is copy-pasted across files with slight variations. A new developer joins and spends their first week just trying to understand where things live. The API still works. But it's become a place nobod...