mastering▌

Enterprise-grade TypeScript development with type-safe patterns, modern tooling, and framework integration. \n \n Covers TypeScript 5.9+ fundamentals including generics, mapped types, conditional types, and the satisfies operator for type validation \n Includes framework-specific guidance for React, NestJS, and LangChain.js with practical code examples and type-safe patterns \n Provides enterprise patterns for error handling, runtime validation with Zod, and API contract design \n Addresses mode

Review Motion code for AnimatePresence and exit animation best practices.