类型别名 MonitorEvents

MonitorEvents: {
    close(): void;
    resetConnectionPool(): void;
    resetServer(error?: MongoError): void;
    serverHeartbeatFailed(event: ServerHeartbeatFailedEvent): void;
    serverHeartbeatStarted(event: ServerHeartbeatStartedEvent): void;
    serverHeartbeatSucceeded(event: ServerHeartbeatSucceededEvent): void;
} & EventEmitterWithState