* 歴史

[REFS[
- [1] [CITE[Web IDL (Second Edition)]] ([TIME[2015-05-27 01:29:33 +09:00]] 版) <http://heycam.github.io/webidl/#dfn-stringifier>
]REFS]

[2] [CITE@en[Formalize custom element reactions · whatwg/html@27aa7bc]]
([TIME[2016-04-26 19:01:33 +09:00]] 版)
<https://github.com/whatwg/html/commit/27aa7bc4fa6f168654a8c858f0773e611f679b39>