Return a array of weeks in a month, with start and end date or day.

getWeeksStartAndEndInMonth.ts

/**
 * Return a array of weeks in a month, with start and end date or day.
 * @param _month number Define the month (WARNING: month start at 0 in javascript)
 * @param _year number Define the year
 * @param returnDate boolean Define if returns a Date class in returned array or not
 * @return Array<{start: number, end: number}>
 */
public getWeeksStartAndEndInMonth(_month: number, _year: number, returnDate: boolean = false) {
    const lastDay = new Date(_year, _month + 1, 0);
    let weeks: Array<{start: number, end: number}> = [];
    let _days = [];
    for (let _day = 1; _day <= lastDay.getDate(); _day++){
        let _thisDay = new Date(_year, _month, _day);
        _days.push(returnDate ? _thisDay : _day);
        if(_thisDay.getDay() === 6){
            weeks.push({start: _days[0], end: _days[_days.length-1]});
            _days = [];
        }else if(_thisDay.getDate() === lastDay.getDate()){
            weeks.push({start: _days[0], end: _days[_days.length-1]});
        }
    }
    return weeks;
}