odin-js-fundamentals-part-5/12_findTheOldest/findTheOldest.js

const findTheOldest = function(array) {
    const oldest = array.sort((a, b) => {
        let yearNow = (new Date()).getFullYear();
        let ageA = ((a.yearOfDeath) ? a.yearOfDeath : yearNow) - a.yearOfBirth;
        let ageB = ((b.yearOfDeath) ? b.yearOfDeath : yearNow) - b.yearOfBirth;
        return (ageA > ageB) ? -1 : 1;
    })[0];
    return oldest;
};

// Do not edit below this line
module.exports = findTheOldest;