import { type ValidDate } from './is-valid-date.js';
type IsDateOnOrBefore = {
    (other: unknown): (value: unknown) => value is ValidDate;
    (other: unknown, value: unknown): value is ValidDate;
};
/**
 * Asserts that a value is an instance of `Date` occurring on or before the exact date and time of another.
 *
 * @tags guard, dates, comparator
 */
export declare const isDateOnOrBefore: IsDateOnOrBefore;
export {};