export declare class Writer {
    __filename: any;
    __tempFilename: any;
    __locked: boolean;
    __prev: any;
    __next: any;
    __nextPromise: any;
    __nextData: any;
    __add(data: any): Promise<unknown>;
    __write(data: any): Promise<void>;
    constructor(filename: any);
    write(data: any): Promise<unknown>;
}