MomentJSBdays

const getBusinessDays = (startDate, endDate) => {
  let days = Math.round(startDate.diff(endDate, 'days') - startDate .diff(endDate, 'days') / 7 * 2);
  if (endDate.day() === 6) {
    days--;
  }
  if (startDate.day() === 7) {
    days--;
  }
  return Math.abs(days);
}