Function syncUpdates

docs/external/js/react-dom.development.js:21967–21969

(fn, a, b, c)

    flushPassiveEffects();
  }
  function syncUpdates(fn, a, b, c) {
    return runWithPriority$1(ImmediatePriority, fn.bind(null, a, b, c));
  }

  function flushPendingDiscreteUpdates() {
    if (rootsWithPendingDiscreteUpdates !== null) {