Missing documentation of `dispatch` function's stability
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描述
First, I like the new React docs a lot! Unfortunately, I can no longer find the following information about useReducer that was once available in the docs:
The useReducer hook returns an array with two elements: the current state and a dispatch function. The dispatch function is used to update the state by calling it with an action object. The dispatch function returned by useReducer has a lifecycle similar to that of the component it is used in. It is created when the component mounts and destroyed when the component unmounts. The dispatch function is guaranteed to be stable across re-renders.
Is this no longer the case?
On page Lifecycle of Reactive Effects there is a note box saying "In some cases, React knows that a value never changes..." and mentioning useState and useRef. It would be ideal if the documentation would explicitly enumerate all the stable return values from hooks, i.e., the ones that share the lifecycle of their component.
贡献指南
从这里开始
- 先读完整个 Issue,再读项目的贡献指南。
- 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
- Fork 仓库,在一个分支上完成修改。
- 提交 Pull Request,并在描述里引用这个 Issue 编号。
调研方向
从 Lifecycle of Reactive Effects 页面和当前的 useReducer 文档开始,然后将它们与 issue 中引用的稳定性细节进行比较。追踪 hook 返回值保证的文档位置,并更新相关文档,以明确且一致地说明 dispatch 的稳定性以及预期稳定的 hook 值。
由索引模型根据 Issue 内容生成。
评估
- 技术栈
- javascript, react
- 领域
- documentation
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- 文档
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- 2/5
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- 1-3 小时
- 活跃度
- 停滞
- 描述清晰度
- 基本清楚
- 新手友好度
- 48/100