import * as moment_ from 'moment';
export declare class DateService {
    /**
     * Format date based on momentjs format
     *
     * @param date
     * @param format
     *
     * @example format(new Date(), 'MM/YYYY')
     * @returns 'MM/YYYY' ex: 1992/04
     */
    format(date: any, format: any): string;
    /**
     * Add time from date based on frequency
     *
     * @param date {date} based date to add
     * @param time number of columns to add
     * @param frequency {string} Can set days, month, year
     */
    add(date: Date, time: any, frequency: string): moment_.Moment;
    /**
     * Subtract time from date based on frequency
     *
     * @param date {date} based date to subtract
     * @param time number of columns to subtract
     * @param frequency {string} Can set days, month, year
     */
    sub(date: Date, time: any, frequency: string): moment_.Moment;
    /**
     * Create a new Date range
     *
     * @param date {date}
     * @param time
     * @param frequency {string} Can set days, month, year
     */
    createRange(date: Date, time: any, frequency: any): Date[];
}