Function that returns an array of date objects for a particular week, given a certain date

index.ts

const getDaysOfWeekFromGivenDate = (
  date: Date | null
) => {
  if (date) {
    const startOfWeek = moment(date).startOf('isoWeek');
    const weekArray = moment.weekdays();
    const daysOfWeekInSelectedDate = daysOfWeek.map((d, i) => {
      return startOfWeek
        .clone()
        .add(i, 'd')
        .toDate();
    });

    return daysOfWeekInSelectedDate;
  } else {
    return [];
  }
};

On line 7, daysOfWeek would be undefined, shouldn't it be weekArray instead?