asciidoctor/asciidoctor — pull request #712 by Mogztter (2013-10-18 11:38:48+00:00)
Title: Rename default to defaultValue for Opal

@adambeynon This should be unnecessary but I still have error when running with Opal master
> * The missing `$` from `default$` is now fixed on master.

http://discuss.asciidoctor.org/Upgrading-Asciidoctor-js-to-the-latest-version-of-Asciidoctor-tp636p646.html