import { type Undefinable, type NotUndefined } from './undefinable.js';
/**
 *  Zips _self_ with another `Undefinable<T>`.
 *  If _self_ is `T` and _other_ is `U`, this method returns `[NotUndefined<T>, NotUndefined<U>]`.
 *  Otherwise, `undefined` is returned.
 */
export declare function zipForUndefinable<T, U>(self: Undefinable<T>, other: Undefinable<U>): Undefinable<[NotUndefined<T>, NotUndefined<U>]>;