text: let createError = require('http-errors');
  let express = require('express');
  let path = require('path');
  let cookieParser = require('cookie-parser');
  let logger = require('morgan');
  
  let mongoose = require ('mongoose');
  
  let dbURI = require ('../config/db');
  
  mongoose.connect
  
  let indexRouter = require('../routes/index');
  let usersRouter = require('../routes/users');
  
  let app = express();
  
  // view engine setup
  app.set('views', path.join(__dirname, '../views'));
  app.set('view engine', 'ejs');
  
  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(express.static(path.join(__dirname, '../node_modules')));
  
  app.use('/', indexRouter);
  app.use('/users', usersRouter);
  
  // 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.render('error');
  });
  
  module.exports = app;
  