getWebFile.js

var fs = require('fs');
var path = require('path');
var url = require('url');

var getWebFile = function(request,response,callback,publicPath,error) {
  var uri = publicPath + url.parse(request.url).pathname;
  var filename = path.join(process.cwd(), uri);
  try {
    fs.exists(filename, function(exists) {
      if(!exists) {
        callback(request,response);
      } else {
        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();
          } else {
            response.writeHead(200);
            response.write(file, "binary");
            response.end();
          }
        });
      }
    });
  } catch (e) {
    console.log("Error");
    error(request,response,e);
  }
};
module.exports = getWebFile;