if (isWebSocketEvent(event)) {
      const wsEvent = toWebSocketEvent(event);
      if (wsEvent.type === "connection") {
        wsEvent.connection.send("pong");
      } else if (wsEvent.type === "message") {
        console.log("got", new TextDecoder().decode(wsEvent.message));
      }
    }
    if (isWebSocketUpgradeRequest(event)) {
      return upgradeWebSocket(event);
    }