[Javascript] 배열에서 제일 큰 날짜, 제일 작은 날짜 구하기

function formatDate(date) {
    var d = new Date(date),
        month = '' + (d.getMonth() + 1),
        day = '' + d.getDate(),
        year = d.getFullYear();

    if (month.length < 2) 
        month = '0' + month;
    if (day.length < 2) 
        day = '0' + day;

    return [year, month, day].join('-');
}

const datesArray = 배열명.map((element) => new Date(element));
let maxDate = new Date(Math.max(...datesArray));
let minDate = new Date(Math.min(...datesArray));

maxDate = formatDate(maxDate);
minDate = formatDate(minDate);