nodejs singleton

var util = require('util');
var fs = require('fs');

var systemConfig = (function() {
	var configFilePath = __dirname + '/config.js';
	var configSource = fs.readFileSync(configFilePath);
	var configData = new Array();

	configData = JSON.parse(configSource);

	return {

		set: function(key, value) {
			configData[key] = value;
		},

		get: function(key) {
			return configData[key];
		}
	};
})();

module.exports = systemConfig;