/**
 * The opt-in WebSocket runtime plugin.
 *
 * `.use(websocket())` enables `app.ws()`:
 *
 *   import { websocket } from "@nifrajs/core/ws"
 *
 *   const app = server().use(websocket()).ws("/chat", { message: (ws, data) => ws.send(data) })
 *
 * Without it, `app.ws()` throws at registration (fail-closed), so an app that never uses WebSockets
 * never evaluates or bundles the WS dispatcher, pub/sub registry, and Bun socket plumbing (~1.5 KB
 * gzipped on the minimal-app size benchmark). The runtime installs on that server instance only -
 * the same `.use()` install seam as `mcp()` / `streaming()` / `idempotency()`, not a process-global
 * or a side-effect import.
 *
 * Serving adapters that wire standard sockets themselves (`@nifrajs/workers`) import
 * `attachWebSocket` / `TopicRegistry` from here too.
 */
import type { IdentityPlugin } from "./server/plugin.js";
import { attachWebSocket, TopicRegistry, wrapWebSocketMessageValidation } from "./server/websocket.js";
/**
 * Enable WebSocket routes on a server: `.use(websocket())` turns on `app.ws()`. Applying it twice is
 * a no-op (named plugin dedupe).
 */
export declare function websocket(): IdentityPlugin;
export type { NifraWebSocket, StandardWebSocket, WebSocketContext, WebSocketData, WebSocketHandler, WebSocketUpgradeOutcome, } from "./server/websocket.js";
export { attachWebSocket, TopicRegistry, wrapWebSocketMessageValidation };
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