[3] TreatNonCallableAsNull
は
TreatNonObjectAsNull
に改称されて、
callable でないオブジェクトの動作が変更されました >>1。
[4] Rename [TreatNonCallableAsNull] to [TreatNonObjectAsNull] and change its... · 4043b05 · heycam/webidl ( ( 版)) <https://github.com/heycam/webidl/commit/4043b051d492d4a2f21064f0edf91e642c5a6249>
[5] Web Applications 1.0 r8879 Update to match Web IDL ( ( 版)) <https://html5.org/r/8879>
[6] Re: Extended attributes vs. new types (Boris Zbarsky著, ) <https://lists.w3.org/Archives/Public/public-script-coord/2017JanMar/0009.html>