Function selectDate

packages/react-stately/src/calendar/useCalendarState.ts:408–435

(date)

      }
    },
    selectDate(date) {
      if (props.isDisabled || props.isReadOnly) {
        return;
      }

      if (selectionMode === 'multiple' && date != null) {
        let newDate = normalizeValue(date);
        if (!newDate) {
          return;
        }

        let baseValue: T[] = [];
        if (Array.isArray(value)) {
          baseValue = value;
        } else if (value != null) {
          baseValue = [value];
        }

        let index = baseValue.findIndex(value => isSameDay(value, newDate));
        let newValue =
          index >= 0
            ? baseValue.slice(0, index).concat(baseValue.slice(index + 1))
            : [...baseValue, newDate];
        setControlledValue(newValue);
      } else {
        setValue(date);
      }
    },
    isFocused,
    setFocused,
    isInvalid(date) {