import { PastDueBannerType, BannerInfo, NoticeDates, UserData } from './types';
export declare const calculateDaysDifference: (pastDateString: string, futureDateString?: string) => number;
export declare const getFormattedDate: (date: Date) => string;
export declare const getNoticeDates: (userData: Partial<UserData>) => NoticeDates;
export declare const checkPaymentStatusFailure: (userData: Partial<UserData>) => boolean;
export declare const getBannerInfo: (pastDueBanner: PastDueBannerType, noticeInfo: NoticeDates, isPaymentStatusFailure: boolean) => BannerInfo | undefined;
export declare const updatePaymentFailureCookie: (bannerName?: string) => void;