[3] Web IDL の VoidFunction
は、
引数も返す値もないコールバック関数を表す型です。
[4] [css-paint-api] Remove VoidFunction. (bfgeek著, ) https://github.com/w3c/css-houdini-drafts/commit/75cd597c6a2bf52413778d27ef149524f0ec1540
[5] Editorial: use VoidFunction instead of Function in queueMicrotask() (yuki3著, ) https://github.com/whatwg/html/commit/e000f5e3656be9d0bd252ae55151f2be028687df
[6] Change the callback type of queueMicrotask from Function to VoidFunction by yuki3 · Pull Request #4027 · whatwg/html () https://github.com/whatwg/html/pull/4027