nodejs file system does not read file after first http response

i am making a simple http node.js server, by just making it send the most common files on web (HTML, JavaScript, CSS).

so i just make the node files and test for only HTML file which is just fine, but when i try to make it send JavaScript or CSS file, the server returns an error and closes.

main.js

/*
*   Main node.js server file
*/

// Load all modules
console.log('Loading modules');
var http = require('http'),
    fs = require('fs'),
    file = require('./bin/file.js');

// Load config file
console.log('Loading configuration file');
var config = fs.readFileSync('./config.json');
var config = JSON.parse(config);

// Config http server
var host = http.createServer(function(request, response)
{
    console.log('requesting: ', request.url);

    var view = file.read(request.url);

    response.writeHead(view.status, view.head);
    response.write(view.content);
    response.end();
});

// Start server
if(host.listen(config.port))
    console.log('Http server initialized on port:', config.port);

just in case, config.json contains only the port and web files directory

file.js

// Load the required modules
var fs = require('fs');

// Load configuration
var config = fs.readFileSync('config.json');
var config = JSON.parse(config);

// Export module function
module.exports = {
    read: function(file)
    {
        if(file == '/')
            return loadFile('/index.html');
    }
};

// Load the requested file
function loadFile(file)
{
    var req = fs.readFileSync(config.dirFiles + file);

    var result = {};

    if(!req)
    {
        result = {
            status: 404,
            head: {'Content-Type': 'text/plain'},
            content: 'The requested view does not exist'
        };
    }

    else
    {
        result = {
            status: 200,
            head: {'Content-Type': getMIME(file)},
            content: req
        };
    }

    return result;
}

// Detect MIME file type
function getMIME(file)
{
    var regex = /(.css|.html|.js)/;
    var ext = regex.exec(file);

    var MIME = '';

    switch(ext[1])
    {
        case '.js':
            MIME = 'text/javascript';
            break;

        case '.css':
            MIME = 'text/css';
            break;

        case '.html':
            MIME = 'text/html';
            break;
    }

    return MIME;
}

on requesting a CSS file, the server tells that view.status property is undefined, this might be because the file is being read synchronous but i don't know what other way i would do