import { ChartDataPoint } from '../types';
/**
 * Largest-Triangle-One-Bucket (LTOB) decimation for large time/ordinal series.
 * Preserves visual trend with O(n) pass.
 * @param data - Array of data points to decimate
 * @param threshold - Maximum number of points to return (default 1000)
 * @returns Decimated array of data points
 */
export declare function useDataDecimation(data: ChartDataPoint[], threshold?: number): ChartDataPoint[];