listen-on-port.js

// NPM dependencies
const browserSync = require('browser-sync');

// Local dependencies
const server = require('./server.js');
const config = require('./app/config.js');
const utils = require('./lib/utils.js');

// Set up configuration variables
const useBrowserSync = config.useBrowserSync.toLowerCase();
const env = (process.env.NODE_ENV || 'development').toLowerCase();

utils.findAvailablePort(server, function (port) {
  console.log(
    'Listening on port ' + port + '   url: http://localhost:' + port
  );
  if (env === 'production' || useBrowserSync === 'false') {
    server.listen(port);
  } else {
    server.listen(port - 50, function () {
      browserSync({
        proxy: 'localhost:' + (port - 50),
        port: port,
        ui: false,
        files: ['public/**/*.*', 'app/views/**/*.*'],
        ghostMode: false,
        open: false,
        notify: false,
        logLevel: 'error',
      });
    });
  }
});