goldziher/type-predicates

@tool-belt/type-predicates is a comprehensive TypeScript library offering performant type guards and assertions with superior type inference, serving as a drop-in replacement for Node.js's `util/types` module while providing better cross-platform compatibility and more extensive functionality. It's designed for TypeScript developers who need reliable runtime type checking with excellent IDE support and zero dependencies, featuring both guard and assertion forms for every type check. The library includes advanced features like composable type guards, deep validation, and custom type guard creation, making it ideal for input validation, API response handling, and ensuring type safety in complex applications.