import type { ChartCapability } from "../../ai/chartCapabilityTypes";
/**
 * DifferenceChart's native shape is two series. When the input has 2+ series
 * we subselect the top two by total y and pivot them into the wide form the
 * chart expects — same "narrow the dataset to make the chart honest" pattern
 * AreaChart uses for its single-series fallback.
 */
export declare const DifferenceChartCapability: ChartCapability;
