export declare class DateUtils {
    /**
     * Method to transform the specified `seconds` to milliseconds
     * @param {number} seconds The seconds to transform
     * @returns {number} Return the specified `seconds` transformed in milliseconds
     */
    static secondsToMillis(seconds: number): number;
    /**
     * Method to transform the specified `minutes` to milliseconds
     * @param {number} minutes The minutes to transform
     * @returns {number} Return the specified `minutes` transformed in milliseconds
     */
    static minutesToMillis(minutes: number): number;
    /**
     * Method to transform the specified `hours` to milliseconds
     * @param {number} hours The hours to transform
     * @returns {number} Return the specified `hours` transformed in milliseconds
     */
    static hoursToMillis(hours: number): number;
    /**
     * Method to transform the specified days to milliseconds
     * @param {number} days The days to transform
     * @returns {number} Return the specified `dayNumber` transformed in milliseconds
     */
    static daysToMillis(days: number): number;
    /**
     * Method to format a Date time with the specified locale information. If not locale specified, will be use `es-ES`
     * @param {Date} date Date to format
     * @param {string} [locale] Locale value to format
     * @returns {string} Return the `date` formaet into the specified `locale` or `es-ES`
     */
    static formatDateTime(date: Date, locale?: string): string;
    /**
     * Method to add days to the specified date
     * @param date Date to add days
     * @param days days to add
     * @returns Return a new date with the specified days added
     */
    static addDays(date: Date, days: number): Date;
    /**
     * Method to remove days to the specified date
     * @param date Date to remove days
     * @param days days to remove
     * @returns Return a new date with the specified days removed
     */
    static removeDays(date: Date, days: number): Date;
    static intervalInMillis(oldDate: Date, newDate: Date): number;
    static intervalInSeconds(oldDate: Date, newDate: Date): number;
    static intervalInMinutes(oldDate: Date, newDate: Date): number;
    static intervalInHours(oldDate: Date, newDate: Date): number;
    static intervalInDays(oldDate: Date, newDate: Date): number;
    static intervalInMonths(oldDate: Date, newDate: Date): number;
    static intervalInYears(oldDate: Date, newDate: Date): number;
    static minutesToDurationString(minutes: number, skipZeroValues?: boolean, limitTo?: string): string;
    static durationStringToMinutes(duration: string): number;
}