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ReactAdvanced#performance
ReactIntermediate#lifecycle#hooks
How does the component lifecycle map to hooks?
componentDidMount maps to useEffect with [], componentDidUpdate to useEffect with dependencies, and componentWillUnmount to the cleanup function returned from useEffect.
Example
useEffect(() => {
subscribe(); // mount
return () => unsubscribe(); // unmount
}, []);
useEffect(() => sync(id), [id]); // update