import { MessageFunctionType, Result } from '../types';
export interface IsISSNErrors {
    TARGET_ARGUMENT_NOT_A_STRING: MessageFunctionType;
}
export declare const IS_ISSN_ERRORS: IsISSNErrors;
/**
 * Tests whether the `target` string is a valid ISSN
 *
 * ### Example
 * ```
 * expect(isISSN('0378-5955').value).toBeTruthy()
 * ```
 * @param target The target
 * @param options The options
 */
export declare function isISSN(target: string, options?: any): Result<boolean | undefined>;