import { DateLike } from './date-like';
/**
 * An representation of a range between 2 dates, defining a start and an end Date object.
 */
export declare class DateRange {
    start: Date;
    end: Date;
    constructor(startAt?: DateLike, endAt?: DateLike);
    isEqualTo(dateRange: DateRange): boolean;
    isValid(): number;
    toString(): string;
}