Accessing jQuery within a JavaScript namespace / module pattern [duplicate]

I'm using the following as a namespace pattern:

var myApp = {

    targetUri: '/path/to/api',

    poll: function()
    {
        $.getJSON(targetUri, null, function(data)
        {
            // ...
        });
    }
};

However, I'm getting an error that $ is undefined on the getJSON line. I'm guessing that the $ object doesn't get scope inside the namespace. How can I resolve this?

I've tried using the = function() variant of the pattern (module pattern), but this is blocked by Content Security Policy (CSP) as part of unsafe-eval.