Function flushSyncCallbacksOnlyInLegacyMode

dash/deps/react-dom@18.2.0.js:12024–12033

()

    scheduleSyncCallback(callback);
  }
  function flushSyncCallbacksOnlyInLegacyMode() {
    // Only flushes the queue if there's a legacy sync callback scheduled.
    // TODO: There's only a single type of callback: performSyncOnWorkOnRoot. So
    // it might make more sense for the queue to be a list of roots instead of a
    // list of generic callbacks. Then we can have two: one for legacy roots, one
    // for concurrent roots. And this method would only flush the legacy ones.
    if (includesLegacySyncCallbacks) {
      flushSyncCallbacks();
    }
  }
  function flushSyncCallbacks() {
    if (!isFlushingSyncQueue && syncQueue !== null) {
      // Prevent re-entrance.