number.util.js

function addTwoNumbers(x, y) {
    if (typeof x !== 'number' || typeof y !== 'number') {
        throw 'Inputs must be numbers';
    }
    return x + y;
}







function subtractTwoNumbers(x,y) {
    if (typeof x !== 'number' || typeof y !== 'number') {
        throw 'Inputs must be numbers';
    }
    return x - y;
}

module.exports = { addTwoNumbers, subtractTwoNumbers };