import { Day, Week } from '../models/datepicker.model';
export declare class DatepickerService {
    /**
     * Get the formatted weekdays
     *
     * @param language
     * @param format
     * @param start
     */
    static getWeekDays(language: string, format: string, start: string): string[];
    /**
     * Checks if is a value iso code
     *
     * @param isoCode
     */
    static isValidIsoCode(isoCode: string): boolean;
    /**
     * Create a week array from the merged day arrays
     *
     * @param dayArray
     */
    static createWeekArray(dayArray: Day[]): Week[];
    static getDaysInMonth(year: number, month: number): number;
    static isValidDate(value: any): boolean;
    /**
     * Check if year is a leap year
     *
     * @param year
     */
    static isLeapYear(year: number): boolean;
    /**
     * Checks to see if value is a valid date
     *
     * @param value
     */
    static isDate(value: Date): boolean;
    /**
     * Get the year of the next month
     *
     * @param year
     * @param month
     */
    static getYearOfNextMonth(year: number, month: number): number;
    /**
     * Get the next month
     *
     * @param month
     */
    static getNextMonth(month: number): number;
    /**
     * Get the year of the previous month
     *
     * @param year
     * @param month
     */
    static getYearOfPreviousMonth(year: number, month: number): number;
    /**
     * Get previous motnh
     *
     * @param month
     */
    static getPreviousMonth(month: number): number;
    /**
     * Check if a date is later
     *
     * @param date
     * @param compareDate
     */
    static isLater(date: Date, compareDate: Date): boolean;
    /**
     * Check if a date is ealrier
     *
     * @param date
     * @param compareDate
     */
    static isEarlier(date: Date, compareDate: Date): boolean;
}