import { type Signal, type WritableSignal } from '@angular/core';
import { type ToObservableOptions } from '@angular/core/rxjs-interop';
import type { Observable, Subscribable } from 'rxjs';
export type ObservableSignal<T> = Signal<T> & Observable<T>;
export declare function toObservableSignal<T>(s: WritableSignal<T> | Subscribable<T>, options?: ToObservableOptions): WritableSignal<T> & Observable<T>;
export declare function toObservableSignal<T>(s: Signal<T> | Subscribable<T>, options?: ToObservableOptions): ObservableSignal<T>;