Function batchedUpdates

code/new-context-api/public/app.js:2959–2983

(fn, bookkeeping)

var isBatching = false;
function batchedUpdates(fn, bookkeeping) {
  if (isBatching) {
    // If we are currently inside another batch, we need to wait until it
    // fully completes before restoring state.
    return fn(bookkeeping);
  }
  isBatching = true;
  try {
    return _batchedUpdates(fn, bookkeeping);
  } finally {
    // Here we wait until all updates have propagated, which is important
    // when using controlled components within layers:
    // https://github.com/facebook/react/issues/1698
    // Then we restore state of any controlled component.
    isBatching = false;
    var controlledComponentsHavePendingUpdates = needsStateRestore();
    if (controlledComponentsHavePendingUpdates) {
      // If a controlled event was fired, we may need to restore the state of
      // the DOM node back to the controlled value. This is necessary when React
      // bails out of the update without touching the DOM.
      _flushInteractiveUpdates();
      restoreStateIfNeeded();
    }
  }
}

function interactiveUpdates(fn, a, b) {
  return _interactiveUpdates(fn, a, b);