Run TypeScript Natively Without Transpiling? Bun & Deno Explained

TypeScript? Woh Toh Compile Hoke JavaScript Banta Hai Na?
Traditionally, TypeScript ko run karne ke liye hum tsc (TypeScript Compiler) ya babel use karte thay. Pehle code ko JavaScript mein convert karo, phir Node.js mein run karo. Extra step, extra time! Par ab kya yeh jaruri hai? Nahi! Aaj hum seekhenge ki TypeScript ko natively kaise run karein—seedha .ts file execute karke!

Native TypeScript Runners Kaun Se Hain?
2 modern tools ne game badal diya:

1. Bun – Ek lightning-fast JavaScript/TypeScript runtime.
2. Deno – Node.js creator Ryan Dahl ka secure runtime.
   Dono hi built-in TypeScript support dete hain. Koi tsconfig.json ya transpile step ki zarurat nahin!

Step-by-Step Guide: TypeScript Ko Seedha Run Karein

Option 1: Bun Ke Saath (Easiest!)

1. Install Bun:

   curl -fsSL https://bun.sh/install | bash

2. Create app.ts:

   const greet = (name: string): void => {
     console.log(`Namaste, ${name}!`);
   };
   greet("Bun User"); // Output: Namaste, Bun User!

3. Run Directly:

   bun run app.ts

✅ Boom! TypeScript seedha run hua!

Option 2: Deno Ke Saath

1. Install Deno:

   curl -fsSL https://deno.land/x/install/install.sh | sh

2. Run .ts File:

   deno run app.ts

✅ No config, no transpile!

Kyon Use Karein Native Execution?

1. Zero Setup
   Koi npm install typescript, tsc-init, ya webpack nahin. Just Bun/Deno install karo aur coding shuru!
2. Lightning Speed
   Bun, Deno internal transpiler use karte hain—compilation miliseconds mein! Testing/debugging super fast.
3. Developer Experience
   Real-time errors with TypeScript types. Live-reload bhi supported!

Limitations Bhi Hain Kya?

• Node.js Modules: Purana Node.js code? Compatibility issues ho sakte hain.
• Deno Permissions: Deno by default secure hai. Files/network access dena padega:

  deno run --allow-read app.ts

• Bun Still Beta: Production use ke liye check karein stability.

Future Kya Hai?

Node.js abhi bhi native TS support nahin deta, par Bun aur Deno trendsetter ban chuke hain. TC39 (JavaScript standards body) bhi explore kar raha hai static typing. Agle 5 saal mein, TypeScript “native” ho sakta hai har platform mein!

Aakhri Baat

Agar aap fast prototyping, teaching, ya small scripts mein TypeScript use karte hain—Bun/Deno ko try karo! Setup ka tension nahin, bas coding ka maza. 😎
Command Yaad Rakhein:

bun run app.ts   # Bun
deno run app.ts  # Deno