server.js

/*eslint-disable no-var*/
'use strict';

var express = require('express');
var path = require('path');

var app = express();
var isProduction = process.env.NODE_ENV === 'production';
var port = isProduction ? 8080 : 3000;
var publicPath = (
  isProduction ?
  path.resolve(__dirname, './dist') :
  path.resolve(__dirname, './build')
);

app.use(express.static(publicPath));

// Use dev server if we are not in production.
if (!isProduction) {
  var httpProxy = require('http-proxy');
  var proxy = httpProxy.createProxyServer({
    changeOrigin: true
  });
  var bundle = require('./dev-bundler.js');
  bundle();
  app.all('/*', function(req, res) {
    proxy.web(req, res, {
      target: 'http://localhost:8080'
    });
  });
  proxy.on('error', function() {
    console.log('Could not connect to proxy, please try again...');
  });
}

// Run the server
app.listen(port, function() {
  console.log('Server running on port ' + port);
});