// math.js
module.exports.add = (x, y) => {
    return x + y;
}

module.exports.multiply = (x, y) => {
    return x * y;
};

# app.js
const math = require('./math.js');
console.log(math.add(2, 3));

// math.js
module.exports = {
    add: (x, y) => {
        return x + y;
    },
    multiply: (x, y) => {
        return x * y;
    }
};

# app.js
const math = require('./math.js');
console.log(math.add(2, 3));