how should I write my logs file for this server.js$?$ require$(\text{'}$dotenv$\text{'}).$config$()$;

const express $=$ require$(\text{'}$express$\text{'})$;

const app $=$ express$()$;

const path $=$ require$(\text{'}$path$\text{'})$;

const cors $=$ require$(\text{'}$cors$\text{'})$;

const corsOptions $=$ require$(\text{'}./$config$/$corsOptions$\text{'})$;

const $\{$ logger $\}=$ require$(\text{'}./$middleware$/$logEvents$\text{'})$;

const errorHandler $=$ require$(\text{'}./$middleware$/$errorHandler$\text{'})$;

const mongoose $=$ require$(\text{'}$mongoose$\text{'})$;

const connectDB $=$ require$(\text{'}./$config$/$dbConn$\text{'})$;

const PORT $=$ process.env.PORT $||3500$;

$//$Connect to MongoDB

connectDB$()$;

$//$ custom middleware logger

app.use$($logger$)$;

app.use$($cors$($corsOptions$))$;

app.use$($express$.$urlencoded$(\{$extended: false$\}))$;

$//$ built$-$in middleware for json

app.use$($express$.$json$())$;

$//$server static files

app.use$(\text{'}/\text{'},$express.static$($path$.$join$(\_\_$dirname, $\text{'}/$public$\text{'})))$;

$//$ routes

app.use$(\text{'}/\text{'},$ require$(\text{'}./$routes$/$root$\text{'}))$;

app.use$(\text{'}/$states$\text{'},$ require$(\text{'}./$routes$/$states$\text{'}))$;

app.all$(\text{'}*\text{'},($req$,$ res$)=>\{$

res.status$(404)$;

if$($req$.$accepts$(\text{'}$html$\text{'}))\{$

res.sendFile$($path$.$join$(\_\_$dirname, 'views', $\text{'}404.$html$\text{'}))$;

$\}$

else if$($req$.$accepts$(\text{'}$json$\text{'}))\{$

res.json$(\{$error: $"404$ Not Found"$\})$;

$\}$ else $\{$

res.type$(\text{'}$txt$\text{'}).$send$("404$ Not Found"$)$;

$\}$

$\})$

app.use$($errorHandler$)$;

mongoose.connection.once$(\text{'}$open$\text{'},()=>\{$

console.log$(\text{'}$Connected to MongoDB'$)$;

app.listen$($PORT$,()=>$ console.log$(`$Server running on port $$\{$PORT$\}`))$;

$\})$