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What is the purpose of the getDerivedStateFromProps() lifecycle method? in REACT

Practice



The new static

getDerivedStateFromProps()
lifecycle method is called after a component instance is created and also before it is re-rendered. It can return an object to update state, or
null
to indicate that the new props do not require any state updates. 
class MyComponent extends React.Component {
  static getDerivedStateFromProps(props, state) {
    // ...
  }
}
This lifecycle method, together with componentDidUpdate()
covers all the use cases of componentWillReceiveProps()

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