Remove clutter

frontend/deterministic-tests/src/managed-websocket.ts

@@ -8,7 +8,7 @@
  * constructor using Object.defineProperty so we don't need conflicting
  * get/set accessor pairs.
  */
-export class ManagedWebSocket implements WebSocket {
+class ManagedWebSocket implements WebSocket {
     public static readonly CONNECTING = WebSocket.CONNECTING;
     public static readonly OPEN = WebSocket.OPEN;
     public static readonly CLOSING = WebSocket.CLOSING;

frontend/deterministic-tests/src/utils/find-free-port.ts

@@ -1,6 +1,6 @@
 import * as net from "node:net";
 
-export interface PortReservation {
+interface PortReservation {
     port: number;
     release: () => void;
 }