Migrating from remix

[mogadanez]

I'm in progress migrating from remix
going hard =)

now I have many issues which looks like:

[commonjs--resolver] Server-only module referenced by client

    '~/lib/auth.server' imported by route 'app/root.tsx'

  React Router automatically removes server-code from these exports:
    `loader`, `action`, `unstable_middleware`, `headers`

  But other route exports in 'app/root.tsx' depend on '~/lib/auth.server'.

it was worked fin in remix, but now for some reason broken

at same time in remix I used server.mjs and if I started migrated app- its running fine

//import './instrumentation.server.mjs';
const {
    PORT
} = process.env
import "./app/src/config.mjs"
import { createRequestHandler } from "@react-router/express";
import express from "express";
import connect from "./app/src/db/connector.mjs";
import {api} from "./app/src/router.mjs";


const viteDevServer =
    process.env.NODE_ENV === "production"
        ? undefined
        : await import("vite").then((vite) =>
            vite.createServer({
                server: { middlewareMode: true },
            })
        );

const app = express();

app.use("/api", api)


if(    process.env.NODE_ENV !== "production"){
// handle asset requests
    if (viteDevServer) {
        app.use(viteDevServer.middlewares);
    } else {
        app.use(
            "/assets",
            express.static("build/client/assets", {
                immutable: true,
                maxAge: "1y",
            })
        );
    }
    app.use( "/_static",
        express.static("build/client", { maxAge: "1h" }));
}


// handle SSR requests
app.all(
    /(.*)/,
    createRequestHandler({
        build: viteDevServer
            ? () =>
                viteDevServer.ssrLoadModule(
                    "virtual:react-router/server-build"
                )
            : await import("./build/server/index.js"),
    })
);


connect()
.then(()=>{
    app.listen(PORT, () => {
        console.log(`API Listening on port ${PORT}`)
    })
})
.catch(
    (error) => {
        console.error(error)
        if (error) throw new Error(`Mongoose could not connect ${error}`)
        else console.log('Connected to MongoDB')
    })