import type { Undefinable } from '../undefinable/undefinable.js';
import { type Maybe } from './maybe.js';
/**
 *  Return `undfined` if _input_ is `null` or `undfined`.
 *  Otherwise, return `T` directly.
 */
export declare function toUndefinableFromMaybe<T>(input: Maybe<T>): Undefinable<T>;