TypeScript has become the default choice for many teams building web and Node applications. Using it well goes beyond adding types—it's about designing for clarity and maintainability.
Prefer strict mode. It catches more bugs at compile time and encourages better design. Use meaningful type and interface names and avoid excessive use of any or type assertions.
Leverage utility types: Partial, Pick, Omit, and Record keep types DRY and expressive. Generics help when building reusable components and utilities. Define types close to where they're used, and extract shared types into a dedicated module.
Keep types in sync with runtime when possible. Zod or similar libraries let you define schemas that double as types and validators, reducing drift between your data and your type system.
Document complex types and write types that tell a story. Future you and your teammates will thank you when the codebase grows. TypeScript is a tool for communication as much as for correctness.