server.js

// server.js
// where your node app starts

// init project
var express = require('express');
var app = express();
var moment = require('moment');
var path = require('path');


app.get('/:datestring', function(req,res) {
  var myDate;
  if(/^\d{8,}$/.test(req.params.datestring)) {
    myDate = moment(req.params.datestring, "X");
  } else {
    myDate = moment(req.params.datestring, "MMMM D, YYYY");
  }

  if(myDate.isValid()) {
    res.json({
      unix: myDate.format("X"),
      natural: myDate.format("MMMM D, YYYY")
    });
  } else {
    res.json({
      unix: null,
      natural: null
    });
  }
});

app.get('/', function(req, res) {
  var fileName = path.join(__dirname, '/views/index.html');
  res.sendFile(fileName, function (err) {
    if (err) {
      console.log(err);
      res.status(err.status).end();
    }
    else {
      console.log('Sent:', fileName);
    }
  });
});



// listen for requests :)
var listener = app.listen(process.env.PORT, function () {
  console.log('Your app is listening on port ' + listener.address().port);
});