typescript-patterns

Advanced TypeScript patterns — generics (constrained, conditional, mapped, template literal types), utility types (built-in, custom, branded/opaque types), type guards (narrowing, discriminated unions, exhaustive checking, assertion functions), Zod validation (schemas, form/API validation, type inference from schemas), error handling (Result types, typed errors, error boundaries, async patterns), and module patterns (barrel exports, declaration merging, module augmentation, tsconfig best practices). 6 skills, 3 commands, 1 agent. No dependencies.