getClosestBusinessDays.js

export default (startDate, endDate) => {
  const result = [];
  const currentDate = startDate;
  while (currentDate <= endDate) {
    const day = currentDate.getDay();
    if (day !== 0 && day !== 6) {
      result[result.length] = new Date(currentDate.getTime());
    }
    currentDate.setDate(currentDate.getDate() + 1);
  }
  return result;
};

const begin = new Date();
const end = new Date();
end.setDate(end.getDate() + 7);
console.log(getBusinessDays(begin, end));