TypeScript is a contract between you and the future. Every type annotation is a boundary you draw. Every interface is a promise you make. Every generic is a spell that adapts to whatever you throw at it.

Types are not bureaucracy. They are guardrails on a cliff road at night. Yes, they slow you down. They also keep you alive.

The developer who skips type checking is not moving faster — she is just discovering her errors later, in production, at the worst possible time.

Writing a good interface is like writing a good contract. It should be clear, complete, and leave no room for misinterpretation. It should protect both parties.

Name your interfaces with care. They are the language your components use to talk to each other. Make that language precise.

A well-written generic function is the closest thing to real magic in programming. It takes any shape, enforces any constraint, and produces type-safe results without you having to write the same function twelve times.

Learn generics. They will change how you think about code.

— JP, from the void.