Like http-server but just one function with no dependencies

httpServeFolder.js

// -------------------------------------
function httpServeFolder(baseDir, port) {
	
	http.createServer(function (request, response) {
	    var filePath = baseDir + request.url.split('?')[0];
			if (!path.extname(filePath))  filePath = filePath + (filePath[filePath.length-1]=='/' ? '' : '/') + 'index.html';

			var extname = path.extname(filePath)
			var exttype = {'.html':'text/html', '.js':'text/javascript', '.css' :'text/css', '.json':'application/json', '.png':'image/png', '.jpg':'image/jpg', '.ico':'image/x-icon'}			
	    var contentType = (exttype[extname]) ? (exttype[extname]) : 'text/plain';

	    fs.readFile(filePath, function(error, content) {
	        if (error) {
						console.log('httpServeFolder: NOT FOUND:',filePath)
						response.writeHead(404, { 'Content-Type': 'text/plain' });	// TODO: check this
						response.end("NOT FOUND: " + filePath, 'utf-8');
					}
	        else {
            response.writeHead(200, { 'Content-Type': contentType });
            response.end(content, 'utf-8');
	        }
	    });

	}).listen(HTTP_PORT);
	console.log(`Server running at: http://localhost:${port}`);
}