The bug for MessageChannel is https://bugzilla.mozilla.org/show_bug.cgi?id=677638 https://bugzilla.mozilla.org/show_bug.cgi?id=677638 (I just poked it, we shoul

The bug for MessageChannel is https://bugzilla.mozilla.org/show_bug.cgi?id=677638 https://bugzilla.mozilla.org/show_bug.cgi?id=677638 (I just poked it, we should fix it). The test needs to be changed to try postMessage on Firefox and any other browser version lacking MessageChannel, or else it should just fail with an alert -- "waiting for Firefox to implement MessageChannel" -- because what it's doing on Firefox is an irrelevant timekiller, as bz showed a few comments above at https://news.ycombinator.com/item?id=6154170 https://news.ycombinator.com/item?id=6154170.