import type { InputSizeVariant } from './types';
export declare function formatValue(date?: Date | null): string;
export declare function changeValueByMask(value: string): string;
export declare function checkValidDate(value: string): boolean;
export declare function stringToDate(value: string): Date | undefined;
export declare function checkValidRange(targetValue: string, type: 'start' | 'end', value?: {
    startDate: Date | null;
    endDate: Date | null;
}): boolean;
export declare function selectionDate(inputElement: HTMLInputElement): void;
export declare function formatStringDate(stringDate: string): string | null;
export declare function getSize(size: InputSizeVariant): {
    calendarSize: "s" | "m" | "l";
    iconSize: "s" | "m";
    gapSize: "s" | "m" | "l";
};
export declare function getIsExclude(currentDate: Date, calendarDate: Date, excludeDate: (date: Date) => boolean): boolean;