We missed this because Flow wasn't being run properly on Travis but now that it is, it's clear that #7716 introduced a bunch of new Flow failures. Most of these shouldn't be too bad and I like to say "you break it you buy it" so this one is for you @Aweary :)

There were a couple other pre-existing Flow issues that @vjeux is going to fix, so mostly this should just be the TestRenderer issues.

},
  /**
   * Save current transaction state -- if the return value from this method is
   * passed to `rollback`, the transaction will be reset to that state.
   */
  checkpoint: function() {
    
    return this.reactMountReady.checkpoint();
  },
  rollback: function(checkpoint) {
    this.reactMountReady.rollback(checkpoint);
  },
  /**
   * `PooledClass` looks for this, and will invoke this before allowing this
   * instance to be reused.
   */
  destructor: function() {
    CallbackQueue.release(this.reactMountReady);
    this.reactMountReady = null;
  },
};
Object.assign(
  ReactTestReconcileTransaction.prototype,
  Transaction,
  ReactTestReconcileTransaction,
  Mixin
);
PooledClass.addPoolingTo(ReactTestReconcileTransaction);
module.exports = ReactTestReconcileTransaction;