We purge it [here](https://github.com/facebook/react/blob/b11540ccb2321aeb7259fcf0b3a38aeeea35231d/src/isomorphic/ReactDebugTool.js#L88-L89) but this code doesn’t run because of the [early exit](https://github.com/facebook/react/blob/b11540ccb2321aeb7259fcf0b3a38aeeea35231d/src/isomorphic/ReactDebugTool.js#L53-L57).

Need to fix this and add a test case to make sure we don’t regress on it.

return element;
      }
      var node = document.createElement('div');
      element = null;
      ReactDOM.render(<Foo />, node);
      ReactNativeOperationHistoryDevtool.clearHistory();
      element = <span />;
      ReactDOM.render(<Foo />, node);
      var inst = ReactDOMComponentTree.getInstanceFromNode(node.firstChild);
      
      
      assertHistoryMatches([{
        instanceID: inst._debugID,
        type: 'mount',
        payload: 'SPAN',
      }]);
    });
  });
  describe('update styles', () => {
    it('gets recorded during mount', () => {
      var node = document.createElement('div');
      ReactDOM.render(<div style={{
        color: 'red',
        backgroundColor: 'yellow',