Use Functional setState Updates When updating state based on the current state value, use the functional update form of setState instead of directly referencing the state variable. This prevents stale closures, eliminates unnecessary dependencies, and creates stable callback references. Incorrect (requires state as dependency): The first callback is recreated every time changes, which can cause child components to re-render unnecessarily. The second callback has a stale closure bug—it will always reference the initial value. Correct (stable callbacks, no stale closures): Benefits: 1. Stable c…