import { DataPoint, WebSocketStream } from './types';

/**
 * Default message parser - expects { x, y, seriesId? } or array of same
 */
export declare function defaultParser(data: unknown): DataPoint | DataPoint[] | null;
/**
 * Helper to create a parser for custom message formats
 */
export declare function createMessageParser<T>(transform: (message: T) => DataPoint | DataPoint[] | null): (data: unknown) => DataPoint | DataPoint[] | null;
/**
 * Helper to connect a WebSocket stream to a chart
 */
export declare function connectStreamToChart(stream: WebSocketStream, chart: {
    appendData: (seriesId: string, data: {
        x: Float32Array;
        y: Float32Array;
    }) => void;
}, seriesIds?: string[]): () => void;