* 文脈

[1] 次の場面で呼び出されます。

[FIG(short list)[
- [[カスタム要素]]の [CODE(DOMm)@en[define]]
- [[イベントの作成]]
]FIG]

[2] [CITE@en[Editorial: improve language around conversions to JS]]
([[Ms2ger]]著, [TIME[2019-02-27 19:12:58 +09:00]])
<https://github.com/heycam/webidl/commit/8ad7c1968eec5c9ad5f30936d2f76b7c0204873e>

[3] [CITE@en[20455 – converting to an ECMAScript value '''['''of a specified type??''']''']]
([TIME[2019-04-02 13:48:11 +09:00]])
<https://www.w3.org/Bugs/Public/show_bug.cgi?id=20455>

[4] [CITE@en[Editorial: improve language around conversions to JS by Ms2ger · Pull Request #664 · heycam/webidl]]
([TIME[2019-07-22 11:48:17 +09:00]])
<https://github.com/heycam/webidl/pull/664>