/**
 * @module indicative-rules
 */
/**
 * Returns a boolean telling, if value is a valid credit card number pattern
 * or not.
 *
 * @example
 * ```js
 * const { is } = require('indicative')
 *
 * if (is.creditCard('4111-1111-1111-1111')) {
 * }
 * ```
 */
export declare const creditCard: (input: string) => boolean;