window.opener explodes

      typeof(window) !== "undefined" && window.opener !== null && typeof window.opener.GLOBALS !== "undefined"
          ? window.opener.GLOBALS

This code blows up if you open gmail from a link on another domain with a cross-origin request denied error.

[juuuuuulian]

We are loading gmail.js in a Chrome extension. I’ll see if we can provide a complete example.

[josteink]

I can’t agree here. Access to window.opener is important when you pop out the message window - in this case we need to know the opener context to access “root” Gmail window. But if you came to root Gmail window from third-party resource, there’s nothing useful (at least for gmail.js 😃) you can get from its context.

Ok. I get the difference now.

And I do agree: This should be fixed.