import { Observable } from 'rxjs';
import { TestScheduler } from 'rxjs/testing';
import { SubscriptionLog } from '../rxjs/types';
export declare class ColdObservable extends Observable<any> {
    marbles: string;
    values?: Record<string, any> | undefined;
    error?: any;
    source: ReturnType<TestScheduler['createColdObservable']>;
    constructor(marbles: string, values?: Record<string, any> | undefined, error?: any);
    getSubscriptions(): SubscriptionLog[];
}