PHP Enum Methods to TypeScript: Why Discriminated Unions + namespace Beats class enums

📰 Dev.to · Gabriel Anhaia

Learn how to migrate PHP enum methods to TypeScript using discriminated unions and namespaces, and why class enums are not the best approach

intermediate Published 7 May 2026
Action Steps
  1. Migrate PHP enum methods to TypeScript using discriminated unions
  2. Create a same-named namespace to organize the enum values
  3. Compare the differences between discriminated unions and class enums in TypeScript
  4. Apply the discriminated union pattern to existing PHP enum code
  5. Test the migrated code to ensure correctness and compatibility
Who Needs to Know This

This lesson is useful for backend developers and full-stack developers who work with both PHP and TypeScript, and need to migrate or integrate their codebases

Key Insight

💡 Discriminated unions and namespaces provide a more scalable and maintainable solution than class enums in TypeScript

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💡 Migrate PHP enums to TS with discriminated unions + namespaces! 🚀

Key Takeaways

Learn how to migrate PHP enum methods to TypeScript using discriminated unions and namespaces, and why class enums are not the best approach

Full Article

PHP enum methods to TS: discriminated union plus a same-named namespace. Three patterns and why TS enum is the wrong reach in 2026.
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