Typescript Pro

**Quick judgement:** High-quality, specialized skill for advanced and production-grade TypeScript work. Well-scoped to strict typing, advanced type-system design, and full-stack type safety. Recommended as a primary TypeScript expert in complex or large-scale projects. **Strengths & benefits** - Excellent for advanced type modeling: generics, conditional types, mapped/template literal types, branded types, and discriminated unions. - Strong emphasis on strict compiler settings, incremental builds, project references, and declaration file generation—well suited for libraries and monorepos. - Clear patterns for type guards, state machines, and type-first API design, including tRPC-style end-to-end type safety. **Risks & limitations** - Opinionated constraints (e.g., avoid enums, avoid `any`, always strict mode) may conflict with legacy codebases or performance-sensitive scenarios where compromises are needed. - Focused on type safety over pragmatism; may push more complex type constructs than some teams want, especially in smaller or rapidly prototyped projects. - Does not explicitly cover specific UI frameworks or runtime platforms beyond TypeScript and tRPC, so front-end or backend framework best practices may need complementary skills. **Recommended scenarios** - Large or mission-critical TypeScript services, libraries, and monorepos needing rigorous type safety and good build performance. - Teams standardizing on strict TypeScript and wanting consistent patterns for type-safe APIs, domain modeling, and internal utilities. - Migrating a JS/loose-TS codebase toward strict, production-grade TypeScript with better type coverage and fewer runtime errors.