What problem does it solve?
TypeScript projects often struggle with inconsistent typing, fragile interfaces, and bloated code when type hints leak into runtime. This Skill provides clear patterns and guidelines to write safer, maintainable TypeScript code.
Core Features & Use Cases
- Const Types Pattern: create runtime values once and derive types from them to ensure a single source of truth.
- Flat Interfaces: prefer single-level interfaces with separate types for nested structures to improve readability and refactorability.
- Never Use any: replace any with unknown and use generics for flexibility while preserving type safety.
- Utility Types: leverage Pick, Omit, Partial, Required, Readonly, Record, Extract, Exclude, NonNullable, ReturnType, Parameters to shape types.
- Type Guards & Import Types: implement runtime guards and use import type for type-only imports to optimize bundles.
- Use-cases: improved API boundaries, safer data parsing, and easier refactoring in large TS projects.
Quick Start
Refactor a sample TypeScript module to apply const types pattern, create flat interfaces, replace any with unknown, and incorporate utility types and a type guard.