Returns the difference (in days) between two dates.
Calculate the difference (in days) between two Date objects.
const getDaysDiffBetweenDates = (dateInitial, dateFinal) =>
(dateFinal - dateInitial) / (1000 * 3600 * 24);getDaysDiffBetweenDates(new Date('2017-12-13'), new Date('2017-12-22')); // 9