TypeScript shines most on large codebases — but only if you use it deliberately. Here are a few habits that pay off.
Prefer precise types
Avoid any. When you don’t know a type yet, reach for unknown and narrow it. Your future self will thank you.
Model your domain
Use discriminated unions to represent states explicitly. A Result type beats throwing and catching in most flows.
Keep types close to data
Co-locate types with the modules that own the data. Shared “types dumping ground” files tend to rot.
Small, consistent habits compound into a codebase that’s a pleasure to work in.
