/// <reference types="express" />
/// <reference types="node" />
import { Compiler, MultiCompiler, Configuration } from "webpack";
import { MiddlewareOptions } from "./types/middleware";
export declare function universalMiddleware(...args: [MultiCompiler | Compiler | Configuration | [Configuration, Configuration], (Configuration | Compiler | MiddlewareOptions)?, MiddlewareOptions?]): import("compose-middleware").RequestHandler<any, import("express").Response<any>, void> & {
    compiler: import("events").EventEmitter & {
        client: {
            webpackConfig: Configuration;
            webpackCompiler: Compiler;
        };
        server: {
            webpackConfig: Configuration;
            webpackCompiler: Compiler;
        };
        isCompiling(): boolean;
        getCompilation(): {
            duration?: number | undefined;
            clientStats?: import("webpack").Stats | undefined;
            serverStats?: import("webpack").Stats | undefined;
        };
        getError(): import("./types/compiler").ErrWithStats | null;
        run(): Promise<{
            duration?: number | undefined;
            clientStats?: import("webpack").Stats | undefined;
            serverStats?: import("webpack").Stats | undefined;
        }>;
        watch(options?: import("webpack").ICompiler.WatchOptions | undefined, handler?: ((err: Error | undefined, stats: {
            duration?: number | undefined;
            clientStats?: import("webpack").Stats | undefined;
            serverStats?: import("webpack").Stats | undefined;
        }) => void) | undefined): () => void;
        unwatch(): Promise<void>;
        resolve(): Promise<{
            duration?: number | undefined;
            clientStats?: import("webpack").Stats | undefined;
            serverStats?: import("webpack").Stats | undefined;
        }>;
    };
};