Thanks for the report, and good timing :)
I actually just committed a fix for HtmlCollection to the StraitifedJS master branch on Friday: https://github.com/onilabs/stratifiedjs/commit/f32b65be21f9b8de0f4e24f19624b36b4cf066bd
Thanks for the heads up on HTMLOptionsCollection. It seems to be a
subclass of HtmlCollection (so the above code is sufficient), but I've now
added a test case to make sure this works, just in case some browsers do
We're planning to release an update to Conductance & SJS soon, so you shouldn't have to wait too long for this to arrive - but in the meantime, you should be able to replace you existing stratifiedjs directory (under node_modules/stratifiedjs if you're using npm) with a git clone of the `master` branch to get this fix.