[Suggestion]: How to avoid null checks when initializing useRef later
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- Dominant language
- JavaScript
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Description
Summary
The example is very bad.
Page
https://react.dev/reference/react/useRef#avoiding-recreating-the-ref-contents
Details
The solution how to avoid this pitfall doesn't seem very robust. If for any reason you wanted to instantiate to VideoPlayer but you want your ref to generally be of type VideoPlayer | null you will never be able to put a null in there.
A more robust way actually seems to leverage useState via:
const [playerRef] = useState(()=>({current:new VideoPlayer()}))
While investigating this issue i've concluded that people in general misunderstand what useRef is, going to the extremes of thinking it's "just for dom elements". playerRef in this snipper is exactly MutableRefObject<VideoPlayer> and this approach doesn't involve all kinds of acrobatics, like lying to a type checker, checks inside the render body etc.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Read the useRef documentation at the linked “avoiding recreating the ref contents” section and review the current example and its stated typing assumptions. Compare the proposed useState approach with the existing guidance, then update the example or explanation so the intended ref type, null behavior, and initialization trade-offs are clear.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript, react
- Domain
- documentation
- Issue type
- Documentation
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100