sebastian/type
sebastian/type provides lightweight value objects that model PHP’s type system. Useful for tools and libraries that need to represent, compare, and work with types (including complex and composite types) in a consistent, structured way.
This package directly informs build-vs-buy decisions for developer tooling initiatives, particularly when needing precise PHP type introspection capabilities. As a PM, I'd leverage it to justify investing in internal static analysis tooling rather than outsourcing, since it provides a battle-tested foundation for type handling without reinventing the wheel. Key use cases include: enabling automated API contract generation from code, enforcing strict type consistency in DTOs across microservices, and extending PHPStan/Psalm with custom rules for domain-specific validation. It also supports roadmap prioritization by reducing technical debt—teams can build type-safe tooling in days instead of months by leveraging its well-tested value objects for union/intersection types.
Adopt this package when your project requires deep PHP type system introspection for static analysis, code generation, or tooling (e.g., custom PHP
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