How can I avoid for an undeclared variable breaking Intellisense?

Yeah, I can already see the upcoming comment trail along the lines of "use declared variables then". But please bear with me.

The situation is that I have a moderate pile of JS files, each containing a Dojo widget. Widgets contain calls to various functions in dojo namespace but because dojo does not exist in the scope of a widget file, Intellisense breaks.

Here CTRL+[space] autocomplete includes this.a and this.b as expected:

new Object({
     a: NaN,
     b: function YesToIntellisense()
     {
         console.log(this.a); // CTRL+[space] includes this.a and this.b
     }
 });
 

Here CTRL+[space] autocomplete lacks both this.a and this.b:

new Object({
     a: dojo.foo(),
     b: function NonIntellisense()
     {
         console.log(this.a); // CTRL+[space] does *not* include this.a and this.b
     }
 });
 

How can I avoid for an undeclared variable breaking Intellisense in VS2010?

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