import type { ChartExcelExtractor } from "./types.js";
/**
 * Scatter is the only cartesian series that is not indexed against its axis: each point
 * carries its own coordinates, so there is no category column and no alignment between
 * series. `colorValue` and `sizeValue` are optional channels, so their columns appear only
 * when at least one point actually defines them, rather than sitting empty on every chart.
 */
export declare const scatterExtractor: ChartExcelExtractor<'scatter'>;