/**
 * The field under validation must be a valid date format.
 *
 * @example
 *  import { date } from "robust-validator"
 *
 *  const definition = {
 *    value: [date("yyyy-MM-dd")]
 *  };
 * @type {string}
 * @tutorial https://validator.axe-api.com/rules.html#date-format
 */
declare const _default: (dateFormat?: string) => string;
export default _default;