upgradeNeededEvent 常量

EventStreamProvider<VersionChangeEvent> const upgradeNeededEvent

静态工厂,旨在向并非必然是 OpenDBRequest 实例的事件处理器公开 upgradeneeded 事件。

有关使用信息,请参阅 EventStreamProvider

实现

static const EventStreamProvider<VersionChangeEvent> upgradeNeededEvent =
    const EventStreamProvider<VersionChangeEvent>('upgradeneeded');