import { XlsxFileWriter } from './XlsxFileWriter.js';
export declare class XlsxWorkbookWriter extends XlsxFileWriter {
    sheets: {
        name: any;
        sheetId: any;
        relationId: any;
    }[];
    addSheet({ name, relationId }: {
        name: string;
        relationId: string;
    }): Promise<string>;
    /**
     * Write remaining data to the file
     */
    close(): Promise<void>;
}
//# sourceMappingURL=XlsxWorkbookWriter.d.ts.map