react-day-picker/dist/esm/helpers/getDays.js

Customizable Date Picker for React

/**
 * Returns all the days belonging to the calendar by merging the days in the
 * weeks for each month.
 *
 * @param calendarMonths The array of calendar months.
 * @returns An array of `CalendarDay` objects representing all the days in the
 *   calendar.
 */
export function getDays(calendarMonths) {
    const initialDays = [];
    return calendarMonths.reduce((days, month) => {
        const weekDays = month.weeks.reduce((weekDays, week) => {
            return weekDays.concat(week.days.slice());
        }, initialDays.slice());
        return days.concat(weekDays.slice());
    }, initialDays.slice());
}