Product Decisions This Supports

Enables consistent validation logic across domain models and service layers, reducing boilerplate code and technical debt from repetitive guard clauses
Supports build-vs-buy decisions by providing a battle-tested solution for runtime assertions, avoiding custom implementation costs
Critical for libraries and multi-application projects requiring standardized input validation across codebases
Enhances developer productivity by replacing verbose if checks with expressive, chainable assertions that communicate intent clearly
Improves testability by centralizing validation rules and producing predictable exceptions for mocking and debugging

When to Consider This Package

✅ When your codebase has scattered, inconsistent validation logic that’s hard to maintain or test
✅ When you need context-specific error messages for debugging or user-facing feedback (e.g., API responses)
✅ When building reusable PHP libraries or microservices requiring strict input validation independent of frameworks
❌ When using