import { Observable, ObservableInput } from 'rxjs';
import { ServerGatewayMessage } from '../../Gateway/ValueObject/ServerGatewayMessage';
import { ServerGatewayMetadata } from '../../Gateway/ValueObject/ServerGatewayMetadata';
import { ServerGatewayInterface } from '../../Gateway/ServerGatewayInterface';
/**
 * Helper transformation operator with client gateways.
 *
 * @example
 *
 *  fromClientCommand((clientGateway) => {
 *     return (clientGateway, messages$) => {
 *        // clientGateway.emit()
 *        // Return some observable
 *        return messages$;
 *     };
 *  })
 */
export declare function fromClientCommand<R, ClientGateway extends ServerGatewayInterface<any>, Message extends ServerGatewayMessage<ServerGatewayMetadata<ClientGateway>>>(callback: (clientGateway: ClientGateway, message: Message) => () => ObservableInput<R>): (input: Observable<Message>) => Observable<R>;