import { IScheduler } from '../schedulers/Scheduler';
import { IObservableEvent } from './Events';
import { IObserver } from './Observer';
export declare class TestObserver<T> implements IObserver<T> {
    private scheduler;
    results: Array<IObservableEvent>;
    toString(): string;
    constructor(scheduler: IScheduler);
    next(val: T): void;
    error(err: Error): void;
    complete(): void;
}