jsdoc for the imported class

Question

I have file lib.js:

/** @module lib */

/** @constructor */
var Clazz = function() {
   this.x = 12;
};
exports.Clazz = Clazz;

and test.js

/** @exports lib */
var lib = require('./lib');
var inst = new lib.Clazz();
inst.x;

I can not get the documentation for the "x" variable in the file test.js. If I import the class otherwise, all works:

/** @exports lib */
var Clazz = require('./lib').Clazz;
var inst = new Clazz();
inst.x;

I use intellij idea 13 for develop.