/**
 * @module indicative-rules
 */
/**
 * Returns a boolean telling if value is a valid Date object or not.
 *
 * @example
 * ```js
 * const { is } = require('indicative')
 *
 * if (is.date(new Date())) {
 * }
 *
 * // also works for `date-fns` instance
 * if (is.date(dateFns.parse('2018-11-20'))) {
 * }
 * ```
 */
export declare const date: (input: any) => boolean;