export interface DirectionIndicatorConfig {
    /** Series ID to track (if not specified, tracks the first series) */
    seriesId?: string;
    /** Number of recent points to analyze for direction (default: 20) */
    sampleSize?: number;
    /** Arrow color (default: from theme) */
    color?: string;
    /** Arrow size in pixels (default: 40) */
    size?: number;
    /** Minimum velocity to show arrow (default: 0.01) */
    minVelocity?: number;
    /** Number of points for smoothing the position/angle (default: 20) */
    historySize?: number;
    /** Hide arrow if no new points are received for this duration in ms (default: undefined/disabled) */
    idleTimeout?: number;
}
export declare const DirectionIndicatorPlugin: import('../..').PluginFactory<DirectionIndicatorConfig>;