/**
 * On-demand export to Google Sheets for data apps.
 *
 * The SDK posts a single message to the parent host. The parent owns the
 * Google OAuth popup (sandboxed iframes can't), the backend POST, and the
 * job polling. This function awaits one response.
 */
import type { SdkGsheetExportColumn, SdkGsheetExportRow } from './postMessageTransport';
export type ExportToSheetsOptions = {
    title: string;
    columns: SdkGsheetExportColumn[];
    rows: SdkGsheetExportRow[];
};
export type ExportToSheetsResult = {
    fileUrl: string;
};
export declare function exportToSheets(options: ExportToSheetsOptions): Promise<ExportToSheetsResult>;