import type { IApi } from '../types';
/**
 * exclude pre-compiling modules in mfsu mode
 * and make sure there has no multiple instances problem (such as react)
 */
export declare function safeExcludeInMFSU(api: IApi, excludes: RegExp[]): void;
export default _default;
/**
 * plugin for derive default behaviors from umi
 */
declare function _default(api: IApi): void;