import { DateUnitKeys } from './constant';
import dayjs, { Dayjs } from 'dayjs';
export declare const getDurationOfFastType: (fast: string | undefined, val: number | undefined, type: string, unit: DateUnitKeys, fastMap: {
    [key: string]: [dayjs.Dayjs | null, dayjs.Dayjs | null];
}) => [Dayjs | null, Dayjs | null];
