Who to register log error 500 in log file

[jhon]

Hello

I have a website in ssr mode but when it generates an error 500 we don’t know how to enter the error.

const express = require('express')
const compression = require('compression')

const ssr = require('quasar-ssr')
const extension = require('./extension')
const app = express()
const port = process.env.PORT || 3000
const host = 'localhost'
const backlog = 511

const serve = (path, cache) => express.static(ssr.resolveWWW(path), {
  maxAge: cache ? 1000 * 60 * 60 * 24 * 30 : 0
})

// gzip
app.use(compression({ threshold: 0 }))

// serve this with no cache, if built with PWA:
if (ssr.settings.pwa) {
  app.use(ssr.resolveUrl('/service-worker.js'), serve('service-worker.js'))
}

// serve "www" folder
app.use(ssr.resolveUrl('/'), serve('.', true))

// we extend the custom common dev & prod parts here
extension.extendApp({ app, ssr })

// this should be last get(), rendering with SSR
app.get(ssr.resolveUrl('*'), (req, res) => {
  res.setHeader('Content-Type', 'text/html')

ssr.renderToString({ req, res }, (err, html) => {
    if (err) {
      if (err.url) {
        res.redirect(err.url)
      }
      else if (err.code === 404) {
        // Should reach here only if no "catch-all" route
        // is defined in /src/routes
        res.status(404).send('404 | Page Not Found')
      }
      else {
        // Render Error Page or
        // create a route (/src/routes) for an error page and redirect to it
        res.status(500).send('500 | Internal Server Error')
        if (ssr.settings.debug) {
          console.error(500 on ${req.url})
          console.error(err)
          console.error(err.stack)
        }
      }
    }
    else {
      res.send(html)
    }
  })
})

app.listen(port, host, backlog, () => {
  console.log(Server listening at port ${port})
})

How could I improve this configuration to record the logs on the server.

Thanks

[beets]

@jhon You would typically use a logging engine like pino, winston, or something custom. Or, if you run your app through PM2, it would log the console.log by default. The terms above should give you some starting point to Google.