import { DatePeriod, SubtractHoursFromTimestamp } from "./types";
export declare const MS_IN_SECOND = 1000;
export declare const SECOND = 1;
export declare const MINUTE: number;
export declare const HOUR: number;
export declare const DAY: number;
export declare const WEEK: number;
export declare const MONTH: number;
export declare const YEAR: number;
export declare const YEAR_IN_MS: number;
export declare const dateDiff: (date1: Date, date2: Date) => {
    milliseconds: number;
    seconds: number;
    minutes: number;
};
/**
 * Returns an array of last n days including current date in format "dd-mm-yyyy" where n is the value of "period" property
 * and date is the date from which the function should start counting the days.
 * @param {DatePeriod} datePeriod - object containing two properties, "period" and "date"
 * @return {string[]}
 */
export declare function getLastNDays(datePeriod: DatePeriod): string[];
/**
 * Subtract hours from a given date and returns timestamp
 * @param {SubtractHoursFromTimestamp} options - object to pass the arguments
 * @property {Date | number} date - date object or timestamp to be subtracted
 * @property {number} hours - number of hours to be subtracted
 * @return {number} - timestamp
 */
export declare function subtractHoursFromTimestamp({ date, hours }: SubtractHoursFromTimestamp): number;