How to Run TypeScript Directly in Node.js with Erasable Syntax Install Node.js 23.6+ (or 22.6+ with --experimental-strip-types ) and TypeScript 5.8+. Add "erasableSyntaxOnly": true and "verbatimModuleSyntax": true to your tsconfig.json compiler options. Set "module": "nodenext" and "noEmit": true in tsconfig.json . Replace all enum declarations with as const objects and derived union types. Convert constructor parameter properties to explicit property declarations and assignments. Refactor value-bearing namespace blocks into standard ES module exports. Run your TypeScript files directly with node src/server.ts — no build step required. Verify type safety by running tsc --noEmit in CI, since Node.js strips types without checking them. TypeScript 5.8 introduced the --erasableSyntaxOnly compiler flag, which validates whether TypeScript code contains only type constructs that can be stripped away without altering runtime behavior.…