TypeScript Utility Library

TypeScript Utility Library A curated collection of type-safe utility functions, custom React hooks, and advanced TypeScript patterns that eliminate frontend boilerplate. Includes 50+ utilities: type-safe event emitters, deep object manipulation, runtime type guards, branded types, discriminated unions, debounce/throttle, and custom hooks for localStorage, media queries, and keyboard shortcuts. Full JSDoc, comprehensive tests, zero dependencies. Key Features Type-Safe Utilities — Object manipulation, array helpers, string formatting, and date functions with strict TypeScript types Custom React Hooks — 20+ hooks for localStorage, media queries, intersection observer, keyboard shortcuts, and clipboard Advanced Generic Patterns — Builder pattern, result types, branded types, and type-safe event emitters with full inference Runtime Type Guards — is* functions for narrowing unknown data at API boundaries Async Utilities — Debounce, throttle, retry with backoff, and cancellable fetch wrappers