Function WarnOnUnmount

packages/react-devtools-shell/src/app/InlineWarnings/index.js:34–41

({children = null})

// $FlowFixMe[missing-local-annot]
function WarnOnUnmount({children = null}) {
  useEffect(() => {
    return () => {
      console.warn('This warning fires on unmount');
    };
  }, []);
  return children;
}

// $FlowFixMe[missing-local-annot]
function ErrorDuringRender({children = null}) {