import type { TransformFn, RecoveryFn } from '../../internal/function.js';
import type { Option } from './option.js';
/**
 *  Maps a `Option<T>` to `U` by applying _transformer_ to a contained `Some(T)` value in _input_,
 *  or a _recoverer_ function to a contained `None` value in _input_.
 *  This function can be used to unpack a successful result while handling an error.
 */
export declare function mapOrElseForOption<T, U>(input: Option<T>, recoverer: RecoveryFn<U>, transformer: TransformFn<T, U>): U;