Any warnings driven off of `warnAboutDeprecatedLifecycles` should use `shared/lowPriorityWarning` rather than `fbjs/lib/warning` to avoid thrashing automated tests.
state = {};
        static getDerivedStateFromProps() {
          return null;
        }
        render() {
          return null;
        }
      }
      polyfill(PolyfilledComponent);
      const container = document.createElement('div');
      ReactDOM.render(<PolyfilledComponent />, container);
    });
    it('should not warn about unsafe lifecycles within "strict" tree for polyfilled components', () => {
      const {StrictMode} = React;
      class PolyfilledComponent extends React.Component {