What is the status of "shallow renderer"?

Google leads me to this page: https://reactjs.org/docs/shallow-renderer.html
However, I can not find it anywhere in the table of contents on the right.
Note that the versioning on the page suggests that this is a feature of React 18

I see that react-test-renderer does export react-test-renderer/shallow ( https://github.com/facebook/react/blob/main/packages/react-test-renderer/shallow.js ), but it isn't documented (https://reactjs.org/docs/test-renderer.html). I also see that shallow-renderer ( https://www.npmjs.com/package/react-shallow-renderer ) is versioned 16, and was last updated 2 years ago, suggesting to me that it is not up to date with React 18.

It would be nice if some clarification of the state of this feature was added to the page. (I'd be happy to volunteer to make such a PR, but I have no way of knowing what the definitive answer is :-) )

先從連結的 shallow renderer 文件頁面和 react-test-renderer/shallow.js 入口點開始，然後將它們與連結的 test renderer 文件進行比較。確定此功能在 React 18 中的狀態，以及獨立的 react-shallow-renderer 套件是否為目前版本。文件清楚說明其狀態並在導覽中適當顯示，即視為完成。