export type WebSocketConstructor = {
    new (url: string | URL): WebSocket;
    prototype: WebSocket;
    readonly CONNECTING: number;
    readonly OPEN: number;
    readonly CLOSING: number;
    readonly CLOSED: number;
};
/**
 * Resolve a WebSocket constructor that works on Node 20+.
 *
 * Node only exposes `globalThis.WebSocket` starting in Node 22. Node 20 still
 * ships a working implementation via `undici`, which is what the published CLI
 * must use so `join` / `wait` don't crash with `WebSocket is not defined`.
 */
export declare function resolveWebSocket(): WebSocketConstructor;
/** Host-only form of a ws(s) URL for logs (no query/token leakage). */
export declare function describeWsTarget(wsUrl: string): string;