export declare function setExtend<T>(props: {
    extendData?: {
        oldFile?: Record<string, {
            data: T;
        }>;
        newFile?: Record<string, {
            data: T;
        }>;
    };
}): void;
export declare function getExtend(): () => {
    oldFile?: Record<string, {
        data: any;
    }>;
    newFile?: Record<string, {
        data: any;
    }>;
};