import type { ICommandBarItemProps } from '@fluentui/react';
import type ColumnTable from 'arquero/dist/types/table/column-table';
/**
 * Constructs a download command.
 * When clicked, will save the current table to a csv.
 * @param table -
 * @param downloadFilename -
 * @returns
 */
export declare function downloadCommand(table: ColumnTable, downloadFilename?: string, props?: Partial<ICommandBarItemProps>): ICommandBarItemProps;