export declare function detectUserTimezone(addressState?: string): string;
export declare function getCurrentTimeInTimezone(timezone: string): Date;
export declare function getCurrentTimeInUserTimezone(addressState?: string): Date;
export declare function isDateTimeInRange(options: {
    startDate?: Date | string | null;
    endDate?: Date | string | null;
    addressState?: string;
}): boolean;
export declare function filterActiveItems<T extends {
    activeFrom: Date | string;
    activeUntil: Date | string;
}>(items: T[], addressState?: string): T[];
export declare function hasActiveItems<T extends {
    activeFrom: Date | string;
    activeUntil: Date | string;
}>(items: T[], addressState?: string): boolean;