+++ /dev/null
-import { Subscriber } from '../Subscriber';
-import { Subject } from '../Subject';
-/**
- * Determines whether the ErrorObserver is closed or stopped or has a
- * destination that is closed or stopped - in which case errors will
- * need to be reported via a different mechanism.
- * @param observer the observer
- */
-export declare function canReportError(observer: Subscriber<any> | Subject<any>): boolean;