Modern React component patterns for building scalable, maintainable UI libraries.

• Covers five core patterns: props API design with TypeScript, composition, render props, custom hooks for logic separation, and performance optimization with React.memo and useMemo
• Includes compound components, polymorphic components, and context-based state sharing for flexible, reusable architectures
• Enforces single responsibility, accessibility standards (aria-*, role, tabindex), and prohibits prop drilling beyond five levels and inline functions
• Provides file structure templates, component boilerplate with forwardRef, and real-world examples (Button, Card, Modal, Accordion, Dropdown)