/**
 * WebSocket request dispatcher: sends `post`, `subscribe`, and `unsubscribe`
 * messages and matches responses by id.
 *
 * @module
 */
/// <amd-module name="file:///home/runner/work/hyperliquid/hyperliquid/src/transport/websocket/_dispatcher.ts" />
import { ReconnectingWebSocket } from "@nktkas/rews";
import { TransportError } from "../_base.js";
import type { HyperliquidEventTarget } from "./_events.js";
/**
 * Error thrown when a WebSocket request fails.
 *
 * @example
 * ```ts
 * import { WebSocketRequestError, WebSocketTransport } from "@nktkas/hyperliquid";
 *
 * const transport = new WebSocketTransport();
 * try {
 *   // Throws on a server rejection, a timeout, an abort, or a lost connection.
 *   await transport.request("info", { type: "allMids" });
 * } catch (error) {
 *   if (error instanceof WebSocketRequestError) {
 *     console.error(error.message, error.request);
 *   }
 * }
 * ```
 */
export declare class WebSocketRequestError extends TransportError {
    /** The original request payload that triggered the error, if available. */
    request?: unknown;
    /**
     * Creates a WebSocket request error.
     *
     * The failed request payload goes into `options.request`.
     */
    constructor(message?: string, options?: ErrorOptions & {
        request?: unknown;
    });
}
/**
 * Owns the WebSocket request queue and matches server responses back to
 * in-flight requests.
 */
export declare class WebSocketDispatcher {
    /** Timeout for requests in ms. Set to `null` to disable. */
    timeout: number | null;
    private readonly _socket;
    private _lastId;
    private _queue;
    constructor(socket: ReconnectingWebSocket, hlEvents: HyperliquidEventTarget, timeout: number | null);
    /**
     * Sends a request and resolves with the matched server response.
     *
     * @param signal Cancels the request from the caller's side.
     */
    request<T>(method: "post" | "subscribe" | "unsubscribe", payload: unknown, signal?: AbortSignal): Promise<T>;
    private _handleSubscriptionResponse;
    private _handlePostResponse;
    private _handleErrorEvent;
    /** Rejects `pending`, when found, with the server text as the message. */
    private _reject;
    /**
     * Finds the pending request matching an echoed body.
     *
     * The server normalizes the echo — fields can be added to the payload and
     * unknown ones dropped — so the queue is searched by subset. Among several
     * subset matches the most specific pending wins: when one in-flight payload
     * is a subset of another, the looser one must not swallow the echo meant
     * for the stricter one.
     */
    private _findByEcho;
}