/**
 * The base implementation of methods like `max` and `min` which accepts a
 * `comparator` to determine the extremum value.
 *
 * @private
 * @ignore
 * @param array The array to iterate over.
 * @param iteratee The iteratee invoked per iteration.
 * @param comparator The comparator used to compare values.
 * @returns Returns the extremum value.
 */
export function baseExtremum(array: any, iteratee: any, comparator: any): any;
export default baseExtremum;