Using empty string to prevent updating of dangerouslySetInnerHTML?

From @sebmarkbage's comment over in the React repo it sounds like dangerouslySetInnerHTML doesn't update the underlying DOM if it receives an empty string. I could also reproduce this: https://repl.it/repls/MotherlyPuzzlingComma

That's useful behavior for us in a server-rendering context where we don't need to ship the HTML to the client. But before merging that PR, I want to make sure this behavior is intended and not going away silently. And if so, should we maybe document it on the website?

まず、リンクされた React issue のコメント、repro、参照されている mozilla/kuma pull request を確認し、空の dangerouslySetInnerHTML が意図された動作かどうかを明らかにします。完了とは、その動作を確認し、React ドキュメントサイトに記載すべきかどうかを判断することです。