more readable custom remix vite server

server.js

import { createRequestHandler } from "@remix-run/express"
import express from "express"

const app = express()
let build

if (process.env.NODE_ENV === "production") {
	build = await import("./build/server/index.js")
	app.use(express.static("build/client"))
} else {
	const vite = await import("vite")
	const viteDevServer = await vite.createServer({
		server: { middlewareMode: true },
	})
	build = () => viteDevServer.ssrLoadModule("virtual:remix/server-build")
	app.use(viteDevServer.middlewares)
}

app.all("*", createRequestHandler({ build }))

app.listen(3000, () => {
	console.log("App listening on http://localhost:3000")
})