var mutils = {
	isArray: function(obj) {
		return (typeof obj == 'object') && obj.constructor == Array;
	},
	isString: function(obj) {
		return (typeof obj == 'string') && obj.constructor == String;
	},
	isNumber: function(obj) {
		return (typeof obj == 'number') && obj.constructor == Number;
	},
	isDate: function(obj) {
		return (typeof obj == 'object') && obj.constructor == Date;
	},
	isFunction: function(obj) {
		return (typeof obj == 'function') && obj.constructor == Function;
	},
	isObject: function(obj) {
		return (typeof obj == 'object') && obj.constructor == Object;
	}
}

module.exports=mutils;