Function batchedEventUpdates

docs/external/js/react-dom.development.js:782–797

(fn, a, b)

    }
  }
  function batchedEventUpdates(fn, a, b) {
    if (isBatchingEventUpdates) {
      // If we are currently inside another batch, we need to wait until it
      // fully completes before restoring state.
      return fn(a, b);
    }

    isBatchingEventUpdates = true;

    try {
      return batchedEventUpdatesImpl(fn, a, b);
    } finally {
      isBatchingEventUpdates = false;
      finishEventHandler();
    }
  } // This is for the React Flare event system
  function discreteUpdates(fn, a, b, c, d) {
    var prevIsInsideEventHandler = isInsideEventHandler;
    isInsideEventHandler = true;