add-two-numbers-compiled-from-ts.js

function addTwoNumbers(num1, num2) {
    return num1 + num2;
}
var result = addTwoNumbers('10', 20);
console.log("Result: " + result);
console.log("Return Type: " + typeof result);

// Outputs an error message during compilation
// demo.ts(5,28): error TS2345: Argument of type '"10"' is not assignable to parameter of type 'number'.