How to access parent function's parameters inside a closure?

I generated a Knockout app using Yeoman which uses RequireJS to manage dependencies. I am not able to access some of the parameters from the parent function inside the closure. Here is the code:

define(["knockout", "jquery", "text!./home.html"], function (ko, $, homeTemplate) {
    debugger;
    // ko, $, homeTemplate are all defined here.
    function HomeViewModel(route) {
        debugger;
        // only ko is defined here. $ and homeTemplate are undefined.
        this.message = ko.observable('Welcome to Knockout!');
    }

    HomeViewModel.prototype.doSomething = function () {
        this.message('You invoked doSomething() on the viewmodel.');
    };

    return { viewModel: HomeViewModel, template: homeTemplate };
});

Why am I not able to access $ and homeTemplate parameters inside the closure?