app.js

const express = require('express');
const path = require('path');
const favicon = require('serve-favicon');
const logger = require('morgan');
const cookieParser = require('cookie-parser');
const bodyParser = require('body-parser');
const stylus = require('stylus');
const nib = require('nib');

const index = require('./routes/index');
const users = require('./routes/users');

const app = express();

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

app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());

const stylusSetup = stylus.middleware({
  src: path.join(__dirname, 'public'),
  compile: (str, path) => {
    return stylus(str)
      .set('filename', path)
      .set('compress', true)
      .use(nib());
  },
});
app.use(stylusSetup);

app.use(express.static(path.join(__dirname, 'public')));

// optional features, uncomment to use!

/* Mongoose */
// app.use(require('./lib/mongoose')());

/* Cachebusting */
app.use(require('./lib/cachebust')()); // heroku labs:enable runtime-dyno-metadata -a <<app>>

/* Helpers */
app.use(require('./lib/helpers'));

app.use('/', index);
app.use('/users', users);

// catch 404 and forward to error handler
app.use((req, res, next) => {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handler
app.use((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;