React Native Firebase v4.0 - 通知模块

Question

我刚刚安装了 react-native-firebase v4.0，我正在尝试检测何时有人打开了我从 google 控制台发送的通知。

但是当我将文档中的示例放入我的代码中时，我得到了

解析错误：意外令牌，预期：（​​致命）

在“行动”

我在这里缺少什么？我以前从未使用过这种语法。

componentDidMount() {
    this.notificationOpenedListener = firebase.notifications().onNotificationOpened(notificationOpen: NotificationOpen => {
            // Get the action triggered by the notification being opened
            const action = notificationOpen.action;
            // Get information about the notification that was opened
            const notification: Notification = notificationOpen.notification;
        });
}

Answer 1

我需要做的就是将 notificationOpen: NotificationOpen 放在括号内。

(notificationOpen: NotificationOpen)