/**
 * Takes an array of numeric dates and tries to understand if the days come
 * before the month or the other way around by checking if numbers go above
 * `12`.
 *
 * Output is `true` if days are first, `false` if they are second, or `null` if
 * it failed to understand the order.
 */
declare function checkAbove12(numericDates: number[][]): boolean | null;
/**
 * Takes an array of numeric dates and tries to understand if the days come
 * before the month or the other way around by checking if a set of numbers
 * during the same year decrease at some point.
 *
 * If it does it's probably the days since months can only increase in a given
 * year.
 *
 * Output is `true` if days are first, `false` if they are second, or `null` if
 * it failed to understand the order.
 */
declare function checkDecreasing(numericDates: number[][]): boolean | null;
/**
 * Takes an array of numeric dates and tries to understand if the days come
 * before the month or the other way around by looking at which number changes
 * more frequently.
 *
 * Output is `true` if days are first, `false` if they are second, or `null` if
 * it failed to understand the order.
 */
declare function changeFrequencyAnalysis(numericDates: number[][]): boolean | null;
/**
 * Takes an array of numeric dates and tries to understand if the days come
 * before the month or the other way around by running the dates through various
 * checks.
 *
 * Output is `true` if days are first, `false` if they are second, or `null` if
 * it failed to understand the order.
 */
declare function daysBeforeMonths(numericDates: number[][]): boolean | null;
/**
 * Takes `year`, `month` and `day` as strings and pads them to `4`, `2`, `2`
 * digits respectively.
 */
declare function normalizeDate(year: string, month: string, day: string): [string, string, string];
/**
 * Pushes the longest number in a date to the end, if there is one. Necessary to
 * ensure the year is the last number.
 */
declare function orderDateComponents(date: string): [string, string, string];
export { checkAbove12, checkDecreasing, changeFrequencyAnalysis, daysBeforeMonths, normalizeDate, orderDateComponents, };