export declare function parseDateFromFormat(str: string, format: string): Date | null;
export declare function formatDateToFormat(date: Date, format: string): string;
export declare function parseRangeFromFormat(input: string, format: string, isRange: boolean, separator: string): {
    first: Date | null;
    second: Date | null;
};
export declare function normalizeDateRange(first: Date | null, second: Date | null): [Date | null, Date | null];