import type { DSControlledDateTimePickerT } from '../react-desc-prop-types.js';
import type { DSControlledDateTimePickerInternalsT } from '../sharedTypes.js';
export declare const getDateValuesFromDate: (day: Date) => DateValuesT;
export declare const getDateStringFromDay: (day: Date) => string;
export declare const getMonthStringFromDay: (day: Date) => string;
export declare const getTimeStringFromDay: (day: Date) => string;
export declare const getMonthNameByMonthNumber: (monthNumber: number) => string;
export declare const isSameDateMoment: (dateA: Date, dateB: Date) => boolean;
export declare const compareTwoDatesDayEquality: (dayA: Date, dayB: Date) => boolean;
export declare const compareTwoDateAreInSameMonth: (dayA: Date, dayB: Date) => boolean;
export declare const isSecondDateInPreviousMonth: (dayA: Date, dayB: Date) => boolean;
export declare const isSecondDateInNextMonth: (dayA: Date, dayB: Date) => boolean;
export declare const getLastDayOfMonth: (month: DSControlledDateTimePickerInternalsT.DateMonth, year: number) => Date;
export declare const isValidDayForTheMonth: (month: DSControlledDateTimePickerInternalsT.DateMonth, year: number, day: DSControlledDateTimePickerInternalsT.DateDay) => boolean;
export declare const getDayFromDateString: (dateString: string) => Date | null;
export declare const isValidDayForTheMonthDateString: (dateString: string) => boolean;
export declare const getValidationDateStringMetaInfo: (dateString: string, getIsOutOfRangeDay?: (day: string) => boolean, getIsDisabledDay?: (day: string) => boolean) => Partial<DSControlledDateTimePickerT.InternalInputsChangeMetaInfo>;
export declare const isLeapYear: (year: number) => boolean;
export declare const getHowManyDaysInMonth: (year: number, month: number) => number;
export declare const dateIsLeapYear: (date: Date) => boolean;
export declare const dateGetDaysInMonth: (date: Date) => number;
export declare const dateAddMonths: (date: Date, value: number) => Date;
export declare const dateAddYear: (date: Date, value: number) => Date;
interface DateValuesT {
    month: DSControlledDateTimePickerInternalsT.DateMonth;
    year: number;
    day?: DSControlledDateTimePickerInternalsT.DateDay;
}
interface DateSumValuesT {
    monthsToSum?: number;
    yearsToSum?: number;
    daysToSum?: number;
}
export declare const sumFromDateValues: ({ month, year, day }: DateValuesT, { monthsToSum, yearsToSum, daysToSum }: DateSumValuesT) => DateValuesT;
export declare const sumValuesToDate: (day: Date, sumValues: DateSumValuesT) => Date;
export declare const subtractYears: (date: Date, howManyMore?: number) => Date;
export declare const subtractMonths: (date: Date, howManyMore?: number) => Date;
export declare const sumMonths: (date: Date, howManyMore?: number) => Date;
export declare const sumYears: (date: Date, howManyMore?: number) => Date;
export declare const getDaysInMonth: (month: number, year: number) => Date[];
export declare const getLastXDaysFromPreviousMonth: (month: number, year: number, howMany: number) => Date[];
export declare const getFirstXDaysFromNextMonth: (month: number, year: number, howMany: number) => Date[];
export declare const getSixBySevenCurrentMonthDaysMatrix: (month: number, year: number) => DSControlledDateTimePickerT.MetaMonthDay[];
export {};