Avoid exception when stylesheet has no style rules.

[lananelson]

In some cases JS parser (kss.js) does not work as expected.
I have a stylesheet from Typekit that is included before any other stylesheets.
All it has is @font-face at-rules.

These rules will not be retrieved here:

ref2 = stylesheet.cssRules;

As a result _ref2 is null and exception thrown on the following line

for (idx = 0, _len2 = _ref2.length; idx < _len2; idx++) {

That results in termination of the outer loop (line 11) and consequently none of the remaining stylesheets that were included after the Typekit stylesheet are parsed.

Since this project probably compiles CoffeeScript from http://github.com/kneath/kss I am not sure whether or not it makes sense to have this bug fixed here. I am going to send a pull request for CoffeeScript as well in the KSS project.

[seanbrant]

Thanks for finding this!

Can you file a bug with main ruby version [1]? I'd like to keep pykss's version the same as the one in the ruby repo. In a perfect world we wouldn't bundle our own version of kss.js though I haven't given much thought about how that would work.

I keep an eye on [1] so once your fix makes it in I will update kss.js.

[1] http://github.com/kneath/kss

[lananelson]

Sure that sounds good!

[lananelson]

I think we can close this now because it seems that the bug was fixed in ruby version.
See
kneath/kss#62

and

kneath/kss#83