Error Handling in TypeScript: Patterns That Scale

Most TypeScript codebases handle errors the same way JavaScript always has — try/catch blocks everywhere, unknown caught errors cast to any, and hope that nothing important slips through. The type system that was supposed to protect you is completely blind to failure paths. There's a better way, and it doesn't require a library.

The fundamental problem with try/catch as your primary error handling strategy is that errors become invisible at the type level. A function's signature promises it returns User, but it might throw five different exceptions. The caller has no way to know without reading the implementation.