guardz
A lightweight, zero-dependency TypeScript type guard library for runtime validation with structured error handling.
Overview
Guardz is a comprehensive TypeScript type guard library designed for runtime validation with advanced error reporting and performance optimizations. It provides seamless type narrowing for TypeScript, enabling developers to validate unknown data from APIs, forms, or databases while maintaining full type safety.
Key Features
- Comprehensive Type Guards — Over 50 built-in guards for all JavaScript types, including primitives, arrays, objects, and union types.
- Advanced Type Narrowing — Precise type inference and seamless integration with TypeScript's type system.
- Structured Error Handling — Configurable error modes (single, multi, json) for detailed validation feedback.
- Performance Optimized — Fast validation with minimal overhead and support for tree shaking.
- Zero Dependencies — Lightweight library with no external dependencies.
- Branded Types & Patterns — Support for branded types and regex pattern validation for enhanced type safety.
Philosophy
Guardz focuses on providing lightweight, composable type guards that enable TypeScript's type narrowing while maintaining excellent performance, distinguishing itself from heavier validation libraries.
Open Source Alternative To
guardz is an open-source alternative to the following products:
Related Projects
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