import type { RecoveryFn } from '../../internal/function.js';
import type { Undefinable } from '../core/undefinable.js';
export type UndefinableTryRecoveryFn<out T> = RecoveryFn<Undefinable<T>>;
/**
 *  Return _input_ as `T` if the passed _input_ is not `undefined`.
 *  Otherwise, return the result of _recoverer_.
 */
export declare function orElseForUndefinable<T>(input: Undefinable<T>, recoverer: UndefinableTryRecoveryFn<T>): Undefinable<T>;