相关疑难解决方法(0)

我正在将离子3.8应用程序迁移到3.9.2.此迁移包括对RXJS 5.5的更新

我现在遇到这个错误:

TypeError: this._subscribe is not a function. (In 'this._subscribe(sink)', 'this._subscribe' is an instance of t)

经过几个小时的调试,我发现这个代码部分与错误有关:

protected observeConnectionState() {

    // rxjs/observable/of
    of(new Event('disconnect'))
        .pipe(
            // rxjs/operators/merge
            merge(connect$),
            merge(disconnect$),

            // Map eventname to string (rxjs/operators/map)
            map((e: IEvent) => {
                return e.eventName == 'connect' ? 'connected' : 'disconnected';
            })
        )
        // Apply to class context
        .subscribe((newConnectionState) => {
            // this.connectionState$ is a BehaviorSubject
            this.connectionState$.next(newConnectionState);
        });
}

附加信息

• 在RXJS代码中有两个地方,我能够找到this._subscribe:Observable.ts第203行和Observable.ts第208行.