proxyStateStream property

  1. @override
Stream<ProxyState> get proxyStateStream
override

TODO: async* 的理论竞态，可改为 Stream.multi。但竞态窗口极窄，无需 Stream.multi。

Implementation

@override
Stream<ProxyState> get proxyStateStream async* {
  yield _lastProxyState; // 新订阅者立即拿到当前状态
  yield* _controller.stream;
}