import { ValuePartDate } from './dates';
import { ValueExactDate } from './ValueExactDate';
import { ValueExactTime } from './ValueExactTime';
/**
 * Converts a parsed Gedcom date to its corresponding JS date (expressed in the Gregorian calendar).
 * The supported calendars are: Gregorian, Julian and French Republican.
 * The Hebrew calendar is not yet supported. Unknown calendars are inherently unsupported.
 * Dual dates will not be converted. BCE dates will be converted assuming the existence of year 0.
 * In any of these cases the returned value will be <code>null</code>.
 * The argument is assumed to be correct, that is of correct format and valid date.
 * This is already guaranteed by {@link parseDate}.
 * @param date The parsed date to convert
 * @category Parsed value converters
 */
export declare const toJsDate: (date: ValuePartDate) => Date | null;
/**
 * Converts a parsed Gedcom date and optional time into the corresponding JS datetime.
 * @param date The parsed date
 * @param time And optional parsed time
 * @category Parsed value converters
 */
export declare const toJsDateTime: (date: ValueExactDate, time?: ValueExactTime) => Date | null;