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