import { ValidationOptions } from '../ValidationOptions';
export declare const IS_EAN = "isEAN";
/**
 * Check if the string is an EAN (European Article Number).
 * If given value is not a string, then it returns false.
 */
export declare function isEAN(value: unknown): boolean;
/**
 * Check if the string is an EAN (European Article Number).
 * If given value is not a string, then it returns false.
 */
export declare function IsEAN(validationOptions?: ValidationOptions): PropertyDecorator;
