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.

render() {
          return <div />;
        }
      }
      var element = <Foo />;
      var tree = {
        displayName: 'Foo',
        children: [{
          displayName: 'div',
          children: [],
        }],
      };
      assertTreeMatches([element, tree]);
    });
    it('reports a tree with composites correctly', () => {
      var Qux = React.createClass({
        render() {
          return null;
        },
      });
      function Foo() {
        return {
          render() {