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.

var transaction;
  try {
    ReactUpdates.injection.injectBatchingStrategy(ReactServerBatchingStrategy);
    transaction = ReactServerRenderingTransaction.getPooled(makeStaticMarkup);
    return transaction.perform(function() {
      var componentInstance = instantiateReactComponent(element);
      var markup = ReactReconciler.mountComponent(
        componentInstance,
        transaction,
        null,
        ReactDOMContainerInfo(),
        emptyObject
      );
      if (__DEV__) {
        ReactInstrumentation.debugTool.onUnmountComponent(
          componentInstance._debugID
        );
      }
      if (!makeStaticMarkup) {
        markup = ReactMarkupChecksum.addChecksumToMarkup(markup);
      }
      return markup;
    }, null);
  } finally {
    ReactServerRenderingTransaction.release(transaction);
    
    
    ReactUpdates.injection.injectBatchingStrategy(ReactDefaultBatchingStrategy);
  }