Function unbatchedUpdates

docs/external/js/react-dom.development.js:22032–22047

(fn, a)

    }
  }
  function unbatchedUpdates(fn, a) {
    var prevExecutionContext = executionContext;
    executionContext &= ~BatchedContext;
    executionContext |= LegacyUnbatchedContext;

    try {
      return fn(a);
    } finally {
      executionContext = prevExecutionContext;

      if (executionContext === NoContext) {
        // Flush the immediate callbacks that were scheduled during this batch
        flushSyncCallbackQueue();
      }
    }
  }
  function flushSync(fn, a) {
    if ((executionContext & (RenderContext | CommitContext)) !== NoContext) {
      {