VisualStudio Intellisense issues with JavaScript object that are part of a namespace

Not sure if this is in the right place, but I'm giving it my best shot at categorizing this correctly. I'm running into an intellisense issue where VisualStudio2013 (VS) won't suggest internal variables in certain situations.

Example: (This one works just fine)

function foo(){
    this._someVar = true;
}
var bar = new foo();
bar._someVar // Autocomplete is working here. 

Example (This one is not suggesting ._someVar)

var namespace = {};
namespace.foo = function(){
this._someVar = true;
}
var bar = new namespace.foo();
bar._som-   // Autocomplete is not woking here. 

Has anyone else run across this issue? How did you get around it or fix it? Thanks.