Version: **15.0.0-rc.1**
Fiddle: https://jsfiddle.net/69z2wepo/33980/ (check console)

For an example providing `NaN` to a css property will result in "_NaN is an invalid value for the fontSize css style property_".
Now I'm aware that there is an error in my code but I have no idea which component I should check.
I would like to have something like this: "_NaN is an invalid value for the fontSize style property. Check the render method of Header_".
I'll be happy to try to solve this if this is something we want to do.

});
      var container = document.createElement('div');
      ReactDOM.render(<div><Inner /></div>, container);
      ReactDOM.unmountComponentAtNode(container);
    });
  });
  describe('onScroll warning', function() {
    it('should warn about the `onScroll` issue when unsupported (IE8)', () => {
      
      
      jest.resetModuleRegistry()
        .mock('isEventSupported');
      var isEventSupported = require('isEventSupported');
      isEventSupported.mockReturnValueOnce(false);
      var ReactTestUtils = require('ReactTestUtils');
      spyOn(console, 'error');
      ReactTestUtils.renderIntoDocument(<div onScroll={function() {}} />);
      expect(console.error.calls.length).toBe(1);
      expect(console.error.argsForCall[0][0]).toBe(
        'Warning: This browser doesn\'t support the `onScroll` event'
      );
    });
  });
  describe('tag sanitization', function() {
    it('should throw when an invalid tag name is used', () => {
      var ReactTestUtils = require('ReactTestUtils');
      var hackzor = React.createElement('script tag');
      expect(
        () => ReactTestUtils.renderIntoDocument(hackzor)
      ).toThrow(