n-rev/index.js

Reverse integer number

'use strict';

const reverseNum = (num) => {
    if (typeof num != "number" || (+num) / num != 1)
        throw new Error('Number must be only integer');
    const numStr = `${num}`;
    return +numStr.split('').reverse().join('');
}

module.exports.rN = reverseNum;