Potential crash during server-side rendering

[feimosi]

If you're using SSR, the environment lacks DOM globals, but the dependencies are treated like in the browser environment. In your code, you're assigning an empty object to the document:

that.document = {};

which is a serious hazard and can simply crash any code depending on this. Here's an example of one of my dependencies (store.js):

Seems like React's SSR uses node-process which sets the browser property on process object:
https://github.com/defunctzombie/node-process/blob/master/browser.js#L156

Based on this fact I've prepared a quick & dirty fix:
feimosi@6a58481
Would be great if you could incorporate it into the next release or suggest a better solution.