/**
 * WebSocket Feed Manager for Dashboard.
 *
 * Connects to exchange WS APIs for real-time account data (balance, positions, orders).
 * Falls back to REST polling if WS connection fails.
 * Arb/market data stays on REST (cross-exchange aggregation, no single WS covers it).
 */
import type { ExchangeBalance, ExchangePosition, ExchangeOrder } from "../exchanges/index.js";
import type { DashboardExchange } from "./server.js";
export interface WsFeedState {
    balance: ExchangeBalance;
    positions: ExchangePosition[];
    orders: ExchangeOrder[];
    lastUpdate: number;
    mode: "ws" | "rest" | "connecting";
}
export interface WsFeedManagerOpts {
    onUpdate: (exchange: string, state: WsFeedState) => void;
    signal?: AbortSignal;
}
export declare class WsFeedManager {
    private feeds;
    private onUpdate;
    constructor(exchanges: DashboardExchange[], opts: WsFeedManagerOpts);
    start(): Promise<void>;
    getState(exchange: string): WsFeedState | null;
    getAllStates(): Map<string, WsFeedState>;
    close(): void;
}