import { YearlessDate, YearlessDateMode } from '../types';
export declare function validateYearlessDate({ value, constraints, }: {
    value: YearlessDate | null;
    constraints: {
        required?: boolean;
        unavailable?: {
            dates?: YearlessDate[];
        };
        minDate?: YearlessDate | null;
        maxDate?: YearlessDate | null;
    };
}): boolean;
/**
 * Return list of months
 * 🌍 localeName: name of local,
 *  ✅ monthFormat: short, numeric, long (Default)
 */
export declare function getMonthNames({ locale, format, }: {
    locale: string;
    format: Intl.DateTimeFormatOptions["month"];
}): string[];
/**
 * Given a text value, parse it into a YearlessDate object and validate it.
 * @param value - The text value to parse.
 * @param mode - The mode of the date input.
 * @param removePlaceholder - The function to remove the placeholder from the text value.
 * @returns An object containing the parsed YearlessDate object, the input validity, and the input emptiness.
 */
export declare function parseInputValue(value: string, mode: YearlessDateMode, removePlaceholder: (value: string) => string): {
    value: YearlessDate | null;
    isInputValid: boolean;
    isInputEmpty: boolean;
};
/**
 * Swap the mode of a date input.
 * @param inputString - The text value to swap the mode of.
 * @param previousMode - The previous mode of the date input.
 * @param mode - The new mode of the date input.
 * @returns The text value with the new mode.
 */
export declare function swapMode(inputString: string, previousMode: YearlessDateMode, mode: YearlessDateMode): string;
/**
 * Convert a YearlessDate object into a text value.
 * @param day - The day of the date.
 * @param month - The month of the date.
 * @param mode - The mode of the date input.
 * @returns The stringified date.
 */
export declare function stringifyYearlessDate(day: number | string | null, month: number | string | null, mode: YearlessDateMode): string;
/**
 * Get the number of days in a given month.
 * @param month - The month number (1-12)
 * @returns The number of days in the month
 */
export declare function getDaysInMonth(month: number): number;
/**
 * Get months that don't have enough days for the given day.
 * @param day - The day number (1-31)
 * @returns Array of month numbers that don't have enough days for the given day
 */
export declare function getInvalidMonthsForDay(day: number): number[];