import WebSocket from "ws";
export declare class AsyncEventQueue<T> implements AsyncIterable<T> {
    private readonly values;
    private readonly waiters;
    private done;
    private error;
    push(value: T): void;
    close(): void;
    fail(error: unknown): void;
    [Symbol.asyncIterator](): AsyncIterator<T>;
}
export interface RuntimeTransportTarget {
    url: string;
    hostHeader?: string;
}
export declare const resolveRuntimeTransportTarget: (baseUrl: string, path: string, runtimeProxyOverride?: string) => RuntimeTransportTarget;
export declare const toWebSocketUrl: (baseUrl: string, path: string, runtimeProxyOverride?: string) => RuntimeTransportTarget;
export declare const openRuntimeWebSocket: (target: RuntimeTransportTarget, headers: Record<string, string>) => Promise<WebSocket>;