import { NgDocSubscribable } from '@ng-doc/ui-kit/types';
import { Observable, OperatorFunction, MonoTypeOperatorFunction } from 'rxjs';
import { NgZone } from '@angular/core';

/**
 * @param subscribable
 */
declare function fromSubscribe<T>(subscribable: NgDocSubscribable<T>): Observable<T>;

type StatedObservable<T, E = Error> = Observable<ObservableState<T, E>>;
interface ObservableState<T, E = Error> {
    result: T | null;
    error: E | null;
    pending: boolean;
}
/**
 *
 * @param retry
 */
declare function observableState<T, E = Error>(retry?: Observable<unknown>): OperatorFunction<T, ObservableState<T, E>>;

/**
 *
 * @param ngZone
 */
declare function ngDocZoneAttach<T>(ngZone?: NgZone): MonoTypeOperatorFunction<T>;
/**
 *
 * @param ngZone
 */
declare function ngDocZoneDetach<T>(ngZone?: NgZone): MonoTypeOperatorFunction<T>;
/**
 *
 * @param ngZone
 */
declare function ngDocZoneOptimize<T>(ngZone?: NgZone): MonoTypeOperatorFunction<T>;

export { fromSubscribe, ngDocZoneAttach, ngDocZoneDetach, ngDocZoneOptimize, observableState };
export type { ObservableState, StatedObservable };