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

Book: PHP to TypeScript — A Bridge for Modern PHP 8+ Developers Also by me: The TypeScript Library — the 5-book collection My project: Hermes IDE | GitHub — an IDE for developers who ship with Claude Code and other AI coding tools Me: xgabriel.com | GitHub You write enum Status in TypeScript and assume the bridge from PHP is built. It is not. PHP's enum is a runtime class with method dispatch and exhaustive match . TypeScript's enum is a compile-time hint that emits an unwanted IIFE. Same keywor