block2.javascript

function logProps(WrappedComponent) {
  return class extends React.Component {
    componentDidUpdate(prevProps) {
      console.log('Previous props: ', prevProps);
      console.log('Current props: ', this.props);
    }
    render() {
      // Wraps the input component in a container, without mutating it. Good!
      return <WrappedComponent {...this.props} />;
    }
  }
}