[1] Respond to change with Object.observe - HTML5Rocks Updates ( (2013-03-02 12:09:17 +09:00 版)) http://updates.html5rocks.com/2012/11/Respond-to-change-with-Object-observe

[2] Chromium Blog: Chrome 36 Beta: element.animate(), HTML Imports, and Object.observe() ( (2014-06-02 22:54:22 +09:00 版)) http://blog.chromium.org/2014/05/chrome-36-beta-elementanimate-html.html

[3] IRC logs: freenode / #whatwg / 20140722 ( (2014-07-23 10:21:17 +09:00 版)) http://krijnhoetmer.nl/irc-logs/whatwg/20140722

[4] Object.observe()able properties on the web platform ( (Domenic Denicola 著, 2014-08-21 00:06:57 +09:00 版)) http://lists.w3.org/Archives/Public/public-script-coord/2014JulSep/0191.html

[5] An update on Object.observe (2015-11-18 10:59:27 +09:00 版) https://esdiscuss.org/topic/an-update-on-object-observe

[6]

An update on Object.observe (2015-11-18 11:02:00 +09:00 版) https://esdiscuss.org/topic/an-update-on-object-observe

After much discussion with the parties involved, I plan to withdraw the Object.observe proposal from TC39 (where it currently sits at stage 2 in the ES spec process), and hope to remove support from V8 by the end of the year (the feature is used on 0.0169% of Chrome pageviews, according to chromestatus.com).

[7] 27381 – Basing Object.observe() for IDL objects on internal slots ( (2016-06-03 18:04:59 +09:00)) https://www.w3.org/Bugs/Public/show_bug.cgi?id=27381

[8] s/filter/remove unsupported types (igrigorik著, 2017-10-08 02:53:39 +09:00) https://github.com/w3c/performance-timeline/commit/74a9181d8ac1bfb5410b1f57c94a8d28b11911ed

[9] Step 1 of "observe" is not clear · Issue #89 · w3c/performance-timeline (2017-10-08 21:50:48 +09:00) https://github.com/w3c/performance-timeline/issues/89