import { DownloadItem } from '../actions/download';
import { TimeseriesWidgetData } from './types';
/**
 * Download menu items for the Timeseries widget. Always includes a CSV
 * item with `time, series_1, series_2, …` columns (one row per unique time
 * across all series; ISO-8601 strings for `Date`/numeric times). When
 * `getCaptureEl` is supplied, prepends a PNG item that rasterises the
 * captured element via `html2canvas`.
 */
export declare function createTimeseriesDownloadConfig(args: {
    filename: string;
    getData: () => TimeseriesWidgetData;
    seriesNames?: readonly string[];
    getCaptureEl?: () => HTMLElement | null;
    pngPixelRatio?: number;
    pngBackgroundColor?: string | null;
}): DownloadItem[];