Example app.js to run react-router on a Node and Express web server

app.js

// This application uses express as its web server
// for more info, see: http://expressjs.com
var express = require('express');

const path = require('path')

// create a new express server
var app = express();

// serve the files out of ./public as our main files
app.use(express.static(__dirname + '/public'));

// This tells Express to send every request we get through index.html,
// allowing react-router to handle it
app.get('*', function (request, response){
  response.sendFile(path.resolve(__dirname, 'public', 'index.html'))
});

// start server on the specified port and binding host
app.listen(appEnv.port, '0.0.0.0', function() {
  // print a message when the server starts listening
  console.log("server starting on " + appEnv.url);
});