Jasmine Doesn't recognize Calculator = {...} if it comes after the if(Meteor.isClient) and if(Meteor.isServer)

I’m using standalone Jasmine to test my Meteor app on Cloud 9 IDE. The issue I’m running into is that the placement of my global objects in my main.js file impacts whether my specs pass or not.

Example Spec:

// spec.js

describe("Console Calculator Addition", function() {
    it("should be able to add two numbers", function() {
        expect(Calculator.add(1, 2)).toEqual(3);
    });
});

This works great:

// main.js

Calculator = {
    add: function() {
        var sum = 0;
        for (var i = 0; i < arguments.length; i++) {
            sum += arguments[i];
        }
        return sum;
    }

if (Meteor.isClient) {}
if (Meteor.isServer) {}

This breaks:

// main.js

if (Meteor.isClient) {}
if (Meteor.isServer) {}

Calculator = {
    add: function() {
        var sum = 0;
        for (var i = 0; i < arguments.length; i++) {
            sum += arguments[i];
        }
        return sum;
    }

If I try to place Calculator = {…} anywhere except at the top of the file, the specs break. Is there any way around this?