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Presents advanced TypeScript techniques—generics, conditional types, mapped types, discriminated unions, and utility combinations—to help developers build safer, more expressive type systems and runtime guards for complex apps.

This skill focuses on implementing advanced TypeScript features to build robust, type-safe applications. It covers designing type-first APIs, utilizing generics, implementing custom type guards, branded types, and managing complex state with discriminated unions. It is essential for full-stack development, monorepo setups, and projects requiring maximum type integrity (e.g., integrating with tRPC).