Function deferredUpdates

code/composition/public/app.js:13667–13676

(fn)

  }

  function deferredUpdates(fn) {
    var previousExpirationContext = expirationContext;
    var currentTime = recalculateCurrentTime();
    expirationContext = computeAsyncExpiration(currentTime);
    try {
      return fn();
    } finally {
      expirationContext = previousExpirationContext;
    }
  }
  function syncUpdates(fn, a, b, c, d) {
    var previousExpirationContext = expirationContext;
    expirationContext = Sync;