Start: support for websocket

[Grimthul]

Hello, I am currently playing with Tanstack Start and websockets and the only way I could push websocket file to the defineConfig function is like this:

import { defineConfig } from "@tanstack/start/config";
import { createApp } from "vinxi";

const vinxiDefaultApp = createApp({
    routers: [
        {
            name: "websocket",
            type: "http",
            handler: "./app/ws.ts",
            target: "server",
            base: "/_ws",
        },
    ],
});

const startApp = defineConfig({
    server: {
        preset: "node-server",
        rollupConfig: {
            external: ["@prisma/client"],
        },
        experimental: {
            websocket: true,
        },
    },
});

startApp.config.routers = [...vinxiDefaultApp.config.routers, ...vinxiApp.config.routers];

export default startApp;

Since Vinxi allows definition of websocket file through routers, I think Start should support it too.
Also I am not sure if I am not breaking anything, because the

vinxiApp.config.routers = [...vinxiDefaultApp.config.routers, ...vinxiApp.config.routers];

shows an ugly TS error, so in code I have to ignore it right now.
But websockets in application works with this setting.

Am I missing something and there is already an easier way or Start does not support websockets (easily) yet?