server.js

var http = require("http"),
    url = require("url"),
    path = require("path"),
    fs = require("fs"),
    port = Number(process.env.PORT || 5000);


http.createServer(function(request, response) {
    var uri = url.parse(request.url).pathname,
        filename = path.join(process.cwd(), uri);
  
    fs.exists(filename, function(exists) {
        if(!exists) {
            response.writeHead(404, {"Content-Type": "text/plain"});
            response.write("404 Not Found\n");
            response.end();
            return;
        }
 
        if (fs.statSync(filename).isDirectory()) {
            filename += '/index.html';
        }
 
        fs.readFile(filename, "binary", function(err, file) {
            if(err) {        
                response.writeHead(500, {"Content-Type": "text/plain"});
                response.write(err + "\n");
                response.end();
                return;
            }
 
            response.writeHead(200);
            response.write(file, "binary");
            response.end();
        });
    });
    
}).listen(parseInt(port, 10));
 
console.log("Static file server running at\n  => http://localhost:" +
                port + "/\nCTRL + C to shutdown");