/**
 * @see https://github.com/chriso/validator.js/blob/master/src/lib/isPostalCode.js
 * @see http://formvalidation.io/validators/zipCode/
 * @see https://stackoverflow.com/questions/578406/what-is-the-ultimate-postal-code-and-zip-regex
 * @note - the conditional branching is intentional
 * @see https://gist.github.com/aretecode/9b1765a897554b82da96591372d3c149
 */
declare function isValidZipCode(zipCode: string | number): boolean;
export { isValidZipCode };
export default isValidZipCode;