import { DerivedHeartbeats } from '../types';
import { Observable } from 'rxjs';
import { ApiInterfaceRx } from "../../api/types";
/**
 * @description Return a boolean array indicating whether the passed accounts had received heartbeats in the current session
 */
export declare function receivedHeartbeats(api: ApiInterfaceRx): () => Observable<DerivedHeartbeats>;