可变范围witihin requirejs模块

Question

我是requirejs的新手并且不了解变量范围。

所以以前，例如，我有：

var Foo = "some value";

function firstFunction () {

    //do something with Foo here
    console.log(Foo); 

    }


 function secondFunction () {

    //do something else with Foo here
    console.log(Foo); 

    }

但在模块中

define(function() {

   return {

      //how do I declare Foo within the module so it is available to firstFunction and secondFunction?

      firstFunction: function() {
          //do something with Foo here
          console.log(Foo);
          },

      secondFunction: secondFunction () {
         //do something else with Foo here
         console.log(Foo);
         }
     }

    });

有没有办法在模块中声明变量Foo并使其可用于firstFunction（）和secondFunction（）？