import { RelativeDatetimeValue } from '../enums';
export type RelativeDatetimeRoundOption = 'start' | 'end';
export type NormalizeDatetimeValueParam = RelativeDatetimeValue | number | string | null | undefined;
export type NormalizeDatetimeOptions = {
    round?: RelativeDatetimeRoundOption;
};
export declare const isRelativeDatetimeValue: (value: string) => boolean;
export declare const normalizeToTimestamp: (value?: NormalizeDatetimeValueParam, options?: NormalizeDatetimeOptions) => number;