import type { IActionType, MessageOptions } from './types';
export declare function _appPostActionToPortal<T, R>(_options: MessageOptions<T>, callback: (data: IActionType<R>) => void): void;
export declare function _appPostActionToPortal<T, R>(_options: MessageOptions<T>): Promise<IActionType<R>>;
export declare function removeAppPostActionListener(action: string): void;