Using Modules for Code Organization

// greetings.js
export function greet(name) {
  console.log('Hello, ' + name + '!');
}

// calculations.js
export function calculateSquare(num) {
  return num * num;
}

// main.js
import { greet } from './greetings';
import { calculateSquare } from './calculations';
greet('Alice');
console.log(calculateSquare(3));