import { InjectionToken } from '@angular/core';
import { VCLDateAdapterParseFormats, VCLDateAdapterDisplayFormats, VCLDateRange } from './interfaces';
export declare const VCL_DATE_ADAPTER: InjectionToken<unknown>;
export declare const VCL_DATE_ADAPTER_WEEKDAY_OFFSET: InjectionToken<unknown>;
export declare abstract class VCLDateAdapter<VCLDate> {
    daysPerWeek: number;
    abstract locale?: string;
    abstract weekDayOffset: number;
    abstract isDate(date: any): date is VCLDate;
    /**
     * Checks if value is an array with valid dates
     */
    isDateArray(date: any): date is VCLDate[];
    /**
     * Checks if value is a valid date range
     */
    isRange(date: any): date is VCLDateRange<VCLDate>;
    /**
     * Checks if value is a date range consisting of at least a starting date
     */
    isPartialRange(date: any): date is VCLDateRange<VCLDate>;
    /**
     * Checks if defined locale is in 24h format
     */
    abstract use24hTime(): boolean;
    /**
     * Returns a date representing today's date
     */
    abstract today(): VCLDate;
    /**
     * Returns a the latest possible date
     */
    abstract max(): VCLDate;
    /**
     * Returns a the earliest possible date
     */
    abstract min(): VCLDate;
    /**
     * Returns a date range that represents all possible dates
     */
    always(): VCLDateRange<VCLDate>;
    /**
     * Clones a Date
     */
    abstract clone(date: VCLDate): VCLDate;
    /**
     * Parses a date string in specified format and returns a VCLDate instance
     */
    abstract parse(date: string, format: VCLDateAdapterParseFormats): VCLDate | undefined;
    /**
     * Formats a VCLDate tp the specified format and returns it as a string
     */
    abstract format(date: VCLDate, format: VCLDateAdapterDisplayFormats): string | undefined;
    abstract addMonths(date: VCLDate, months: number): VCLDate;
    abstract addDays(date: VCLDate, days: number): VCLDate;
    abstract getDaysInMonth(date: VCLDate): number;
    abstract getYear(date: VCLDate): number;
    abstract getMonth(date: VCLDate): number;
    abstract getDay(date: VCLDate): number;
    abstract getHour(date: VCLDate): number;
    abstract getMinute(date: VCLDate): number;
    abstract getDayOfWeek(date: VCLDate): number;
    abstract getWeekOfTheYear(date: VCLDate): number;
    abstract getDayOfWeekNames(): string[];
    abstract createDate(year: number, month: number, day: number): VCLDate;
    abstract createDateTime(year: number, month: number, day: number, hour: number, minute: number, second: number): VCLDate;
    abstract createTime(hour: number, minute: number, second: number): VCLDate;
    getFirstWeekdayOfMonth(date: VCLDate): number;
    getLastWeekdayOfMonth(date: VCLDate): number;
    /**
     * @returns 0 if  equal, less than 0 if the first date is earlier, greater than 0 if the first date is later.
     */
    compareDate(date1: VCLDate, date2: VCLDate): number;
    /**
     * @returns 0 if  equal, less than 0 if the first date's month is earlier, greater than 0 if the first date's month is later.
     */
    compareMonth(date1: VCLDate, date2: VCLDate): number;
    /**
     * @returns 0 if  equal, less than 0 if the first date's year is earlier, greater than 0 if the first date's year is later.
     */
    compareYear(date1: VCLDate, date2: VCLDate): number;
    isSameMonth(date1: VCLDate, date2: VCLDate): boolean;
    isSameYear(date1: VCLDate, date2: VCLDate): boolean;
    addYears(date: VCLDate, years: number): VCLDate;
    isSameDay(date1: VCLDate, date2: VCLDate): boolean;
    createRange(start: VCLDate, end?: VCLDate): VCLDateRange<VCLDate>;
    toDate(date: any): VCLDate | undefined;
}