import { type Result } from '../../plain_result/core/result.js';
import { type Undefinable } from '../core/undefinable.js';
/**
 *  Transposes a `Undefinable` of a `Result` into an `Result` of a `Undefinable`.
 *
 *  - `undefined` -> `Ok<undefined>`.
 *  - `Ok<T>` -> `Ok<T>`.
 *  - `Err<E>` -> `Err<E>`.
 */
export declare function transposeUndefinableToResult<T, E>(input: Undefinable<Result<T, E>>): Result<Undefinable<T>, E>;