Method _isDateEnabled

packages/main/src/DayPicker.ts:875–897

* Checks if a given date is enabled (selectable). * A date is considered disabled if: * - It falls outside the min/max date range defined by the component * - It matches a single disabled date * - It falls within a disabled date range (exclusive of start and end dates) * @param date - The

(date: CalendarDate, minDate?: CalendarDate, maxDate?: CalendarDate, precomputedDisabledDates?: Array<{ startTimestamp: number, endTimestamp: number }>)

	 * @private
	 */
	_isDateEnabled(date: CalendarDate, minDate?: CalendarDate, maxDate?: CalendarDate, precomputedDisabledDates?: Array<{ startTimestamp: number, endTimestamp: number }>): boolean {
		const resolvedMin = minDate ?? this._minDate;
		const resolvedMax = maxDate ?? this._maxDate;

		if ((resolvedMin && date.isBefore(resolvedMin))
			|| (resolvedMax && date.isAfter(resolvedMax))) {
			return false;
		}

		const dateTimestamp = date.valueOf() / 1000;
		const disabledRanges = precomputedDisabledDates ?? this.disabledDates.map(range => ({
			startTimestamp: this._getTimestampFromDateValue(range.startValue),
			endTimestamp: this._getTimestampFromDateValue(range.endValue),
		}));

		return !disabledRanges.some(({ startTimestamp, endTimestamp }) => {
			if (endTimestamp) {
				return dateTimestamp > startTimestamp && dateTimestamp < endTimestamp;
			}

			return startTimestamp && dateTimestamp === startTimestamp;
		});
	}

	/**
	 * Converts a date value string to a timestamp.