import { RequestContext } from "../context/request-context";
export declare class EngineAbortPromise<T> {
    abort: () => void;
    promise: Promise<T>;
    then: Promise<T>["then"];
    catch: Promise<T>["catch"];
    finally: Promise<T>["finally"];
    constructor(executor: (resolve: (value: T | PromiseLike<T>) => void, reject: (reason?: any) => void) => void, abort: () => void);
}
export declare abstract class Engine<Response = any> {
    static EngineAbortPromise: typeof EngineAbortPromise;
    abstract doRequest(requestContext: RequestContext): Promise<Response> | EngineAbortPromise<Response>;
    abstract doResponse(response: Response, requestContext: RequestContext): Promise<{
        ok: boolean;
        status: string | number;
        statusText: string;
        result: any;
    }>;
}