daysInMonth property
Returns a list of DateTimes representing the days in the same month as this DateTime.
Implementation
List<DateTime> get daysInMonth {
final first = firstDayOfMonth;
// Calculate days before to align with Monday (ISO 8601 default).
// Mon(1) -> 0, Sun(7) -> 6.
final daysBefore = (first.weekday - 1) % DateTime.daysPerWeek;
final firstToDisplay = first.subtract(Duration(days: daysBefore));
final last = lastDayOfMonth;
// Add days to include the last day and fill the week through Sunday.
final daysAfter = DateTime.daysPerWeek - last.weekday + 1;
final lastToDisplay = last.add(Duration(days: daysAfter));
return firstToDisplay.daysUpTo(lastToDisplay).toList();
}