Ref objects inside useEffect Hooks

When making a custom hook that needs a reference to a DOM node, your first guess would be to use the new useRef hook. It was certainly mine. So naturally I went with that for my first implementation of Hooks in react-intersection-observer — But then an interesting issue came up, that I hadn’t considered. [Question] How would you handle conditional rendering with hooks? · Issue #162 ·… First, I'd l

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useEffectのdepsにrefを入れても意図通りに更新されない話。ref.currentの変更は通知されないため、nodeの変更を見てeffectする時にuseCallbackでnodeのstateを更新するものをrefに設定する。