app.js

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

var indexRouter = require('./routes/index');

var app = express();

// Require sequelize
const Sequelize = require('sequelize');
const sequelize = new Sequelize({
  dialect: 'sqlite',
  storage: 'library.db'
});

// async IIFE
(async () => {
  try {
    await sequelize.authenticate();
    await sequelize.sync({ force: true });
  } catch (error) {

  }
})();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'pug');

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('/', indexRouter);

// 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 : {};
  if (err.status == 404) {
    res.render('page-not-found', {message: 'Page not found'});
  } else {
    err.status = err.status | 500;
    console.log('Error:', err.status, err.message);
    res.render('error', err);
  }
});

module.exports = app;