🔹 a. Exporting from a module
📁 File: mathUtils.js


// mathUtils.js
export const add = (a, b) => a + b;
export const subtract = (a, b) => a - b;



🔹 b. Importing in another file
📁 File: main.js


// main.js
import { add, subtract } from './mathUtils.js';

console.log(add(5, 3));      // 8
console.log(subtract(5, 3)); // 2