Comparation

Class Component	Function Component
constructor	Function components don’t need a constructor. You can initialize the state in the useState call. If computing the initial state is expensive, you can pass a function to useState.
getDerivedStateFromProps	Schedule an update while rendering instead.
shouldComponentUpdate	See React.memo below.
render	This is the function component body itself.
componentDidMount	useEffect(() => { // Your code here }, []);
componentDidUpdate	useEffect(() => { // Your code here }, [yourDependency]);
componentWillUnmount	useEffect(() => { // componentWillUnmount return () => { // Your code here } }, [yourDependency]);
getSnapshotBeforeUpdate	There are no Hook equivalents for this method yet, but they will be added soon.
componentDidCatch	There are no Hook equivalents for this method yet, but they will be added soon.
getDerivedStateFromError	There are no Hook equivalents for this method yet, but they will be added soon.