import { AsyncOption } from './utils/types';
/**
 * Turn a `Some` into a `Promise` that resolves
 * or turn a `None` into a `Promise` that rejects
 * @param option Option to unwrap
 * @returns A `Promise` that may resolve contained value
 */
export declare const asyncUnwrap: <Value = never>(option: import("@tsfun/prv-types").MaybePromise<import("@tsfun/prv-option-result-common").Option<import("@tsfun/prv-types").MaybePromise<Value>>>) => Promise<Value>;
/**
 * Unwrap contained value of a `Some`,
 * or throws an error
 * @param option Option to unwrap
 * @param message Error to throw when `option` does not contain a value
 * @returns Contained value
 */
export declare const asyncUnwrapOrErr: <Value = never, Message = Error>(option: import("@tsfun/prv-types").MaybePromise<import("@tsfun/prv-option-result-common").Option<import("@tsfun/prv-types").MaybePromise<Value>>>, message: Message) => Promise<Value>;
/**
 * Return contained value of a `Some`
 * or default value
 * @param option Option to unwrap
 * @param def Value to return when `option` does not contain a value
 * @returns Promise that resolves contained value or `def`
 */
export declare const asyncUnwrapOr: <Value = never, Default = Value>(option: import("@tsfun/prv-types").MaybePromise<import("@tsfun/prv-option-result-common").Option<import("@tsfun/prv-types").MaybePromise<Value>>>, def: Default) => Promise<Value | Default>;
/**
 * Return contained value of a `Some`
 * or call a function
 * @param option Option to unwrap
 * @param def Function to be called when `option` does not contain a value
 * @returns Promise that resolves to either contained value or returning value of `none`
 */
export declare const asyncUnwrapOrElse: <Value = never, Default = Value>(option: import("@tsfun/prv-types").MaybePromise<import("@tsfun/prv-option-result-common").Option<import("@tsfun/prv-types").MaybePromise<Value>>>, def: () => Default | Promise<Default>) => Promise<Value | Default>;