/** Matches DD/MM/YYYY with one of the DATE_SEPARATORS */
export declare const DATE_FORMAT_REGEX: RegExp;
export declare enum DateErrorCodes {
    WRONG_FORMAT = "wrongFormat",
    MONTH_NOT_MATCH = "monthNotMatch",
    NOT_LEAP_YEAR = "notALeapYear"
}
/** Check if a date is valid */
export declare function isDateValid(date: string): string | true;