typescript-advanced-types

Type-safe API clients in TypeScript use generics and conditional types to enforce input and output shapes across endpoints. This Skill demonstrates inference-driven builders that catch invalid API payloads at compile-time, reducing runtime bugs.

Mapped types in TypeScript transform existing type definitions by iterating over their properties. This Skill applies them to build robust, reusable utilities like deep readonly and deep partial, adapting component types to varying input structures.

Deep readonly and deep partial utility types apply recursive mapped types to enforce immutability or optional properties at all object levels. This Skill provides the patterns to design these inference-driven builders for complex type definitions.

Template literal types enable string-based type transformations, which this Skill uses to build form validators and type-safe APIs. They allow the type system to enforce specific string patterns and property shapes at compile-time.

Conditional types are needed when building reusable TypeScript utilities that must adapt logic based on input types. They allow your library to infer and select different type branches, ensuring robust type-safety across varying scenarios.

No external dependencies are required beyond the TypeScript compiler itself. You only need TypeScript installed in your project to start applying generics, mapped types, and conditional types to your frontend and backend code.