text: var whatType = Object.prototype.toString;
  
  module.exports = {
      isObject: function(object) {
      return (whatType.call(object) === "[object Object]");
      },
  
      isFunction: function(object) {
          return (whatType.call(object) === "[object Function]");
      },
  
      isArray : function(object) {
          return (whatType.call(object) === "[object Array]");
      },
  
      isString: function(object) {
          return (whatType.call(object) === "[object String]");
      },
  
      isNumber: function(object) {
          return (whatType.call(object) === "[object Number]");
      }
  };