import Observable from 'zen-observable-ts';
import { CombinedError } from '../modules/error';
import { IOperation } from './operation';
export interface IExecutionResult {
    errors?: Error[];
    data?: object;
}
export interface IExchangeResult {
    data: IExecutionResult['data'];
    error?: CombinedError;
    typeNames?: string[];
}
export declare type IExchange = (operation: IOperation) => Observable<IExchangeResult>;