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How do you run TypeScript directly in Node.js (native type stripping, tsx, ts-node)?

Q: How do you run TypeScript directly in Node.js (native type stripping, tsx, ts-node)?

**TL;DR.** Three ways to run .ts without a separate build step: modern Node can **strip types** at load (no type-checking, fast); **tsx** is a zero-config loader that transpiles on the fly (great for dev); **ts-node** transpiles and can **type-check**. For production, you usually **compile ahead** with tsc or a bundler and run the plain JS. type stripping built-in, fast no type check tsx esbui

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Type stripping in modern Node vs tsx/ts-node loaders.

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Three ways to run server.ts

# 1) Native type stripping (recent Node) — no type checking
node server.ts

# 2) tsx — fast esbuild loader, ideal for dev + watch
npx tsx watch server.ts

# 3) ts-node — uses the real tsc, can type-check
npx ts-node server.ts

# Keep types honest in CI regardless:
npx tsc --noEmit

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