coding-standards

Apply consistent naming conventions, immutability with spread operators, proper error handling, and strict typing instead of any. Activate this Skill during code reviews or refactoring to check code against these documented rules with concrete examples.

Use typed functional components with explicit props interfaces, extract reusable logic into custom hooks like useDebounce, and update state with functional setters. Memoize expensive computations with useMemo and callbacks with useCallback.

Use Zod schemas to define expected shapes with constraints like string lengths and datetime formats, then parse incoming bodies in route handlers. Return a 400 response with structured error details when validation fails.

Yes, it documents try/catch wrapping with HTTP status checks, parallel execution with Promise.all for independent calls, and rethrowing descriptive errors. It also shows anti-patterns like unhandled fetch calls to avoid.

Watch for functions over 50 lines, nesting deeper than a few levels, and unexplained magic numbers. Fix them by splitting logic into smaller functions, using early returns, and replacing literals with named constants.