import { Subscriber, IObserver, IntoObservable, IObservable } from "./types";
import { Subscription } from "./subscription";
export declare class Observable<T> implements IObservable<T> {
    private _subscriber;
    constructor(subscriber: Subscriber<T>);
    subscribe(observer: IObserver<T>): Subscription;
    subscribe(next: (val: T) => any, error?: (err: Error) => void, complete?: (val: any) => void): Subscription;
    static of<T>(...xs: T[]): Observable<T>;
    static from<T>($: IntoObservable<T>): Observable<T>;
}