Function getUpdateExpirationTime

code/new-context-api/public/app.js:7332–7344

(fiber)

}

function getUpdateExpirationTime(fiber) {
  switch (fiber.tag) {
    case HostRoot:
    case ClassComponent:
      var updateQueue = fiber.updateQueue;
      if (updateQueue === null) {
        return NoWork;
      }
      return updateQueue.expirationTime;
    default:
      return NoWork;
  }
}

function getStateFromUpdate(update, instance, prevState, props) {
  var partialState = update.partialState;