Online TypeScript compiler

Run TypeScript code right in your browser. Nothing to install, no sign-up.

import { readFileSync } from "node:fs";

const name: string = readFileSync(0, "utf8").trim();
console.log(`Hello, ${name}!`);

let total: number = 0;
for (let i = 1; i <= 10; i++) {
  total += i;
}
console.log("1 + 2 + ... + 10 =", total);

Input

This language runs inside your browser. Your code is saved only on this device. Runtimes

What next

Learn TypeScript → Problems