index.js

require('dotenv').config()
var createError = require('http-errors')
var express = require('express')
var path = require('path')
var cookieParser = require('cookie-parser')
var logger = require('morgan')

var OGRouter = require('./routes/og')
var about = require('./about')

var app = express()

app.use(logger('dev'))
app.use(express.json())
app.use(express.urlencoded({ extended: false }))
app.use(cookieParser())
app.use(express.static(path.join(__dirname, 'public')))
app.use('/og', OGRouter)
app.get('/', (req, res, next) => res.send(about))

// catch 404 and forward to error handler
app.use(function (req, res, next) {
  next(createError(404))
})

// error handler
app.use(function (err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message
  res.locals.error = req.app.get('env') === 'development' ? err : {}

  // render the error page
  res.status(err.status || 500)
  res.json('error')
})

/**
 * Get port from environment and store in Express.
 */

var port = process.env.PORT || '3000'
app.set('port', port)

app.listen(app.get('port'), function () {
  console.log('Node app is running on port', app.get('port'))
})

module.exports = app