/**
 * Excel Export
 *
 * Export activities to Excel format using exceljs.
 * This is an optional feature - if exceljs is not available, it throws a clear error.
 */
import { type GeocodedActivity } from '../types';
/**
 * Export activities to Excel format.
 *
 * @param activities Geocoded activities to export
 * @returns Excel file as Uint8Array
 */
export declare function exportToExcel(activities: readonly GeocodedActivity[]): Promise<Uint8Array>;
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