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.

displayName: '#text',
              text: 'Hi.',
            }],
          }, {
            displayName: 'div',
            children: [{
              displayName: '#text',
              text: 'Bye.',
            }],
          }],
        };
        var elementAfter = (
          <div>
            <div key="b">Bye.</div>
            <div key="a">Hi.</div>
          </div>
        );
        var treeAfter = {
          displayName: 'div',
          children: [{
            displayName: 'div',
            children: [{
              displayName: '#text',
              text: 'Bye.',
            }],
          }, {
            displayName: 'div',
            children: [{
              displayName: '#text',
              text: 'Hi.',