import { Compiler, MultiCompiler, Configuration } from "webpack";
import { MiddlewareOptions } from "./middleware";
export declare function isMultiCompiler(compiler?: any): compiler is MultiCompiler;
export declare function isMultiConfig(config?: any): config is Configuration[];
export declare function isSingleCompiler(compiler?: any): compiler is Compiler;
export declare function isMiddlewareOptions(config?: any): config is MiddlewareOptions;
export declare function isSingleConfiguration(config?: any): config is Configuration;
export declare function isClientSingleCompiler(compiler: Compiler): compiler is Compiler;
export declare function isServerSingleCompiler(compiler: Compiler): compiler is Compiler;
export declare function isClientConfiguration(config: Configuration): config is Configuration;
export declare function isServerConfiguration(config: Configuration): config is Configuration;