import type { FromSubscribableObservable, Subscribable } from '../types'; export declare const fromSubscribable: (subscribable: Readonly<{ subscribe: (onNext: (nextValue: A) => void, onError?: ((error?: unknown) => void) | undefined, onComplete?: (() => void) | undefined) => Readonly<{ unsubscribe: () => void; }>; }>) => FromSubscribableObservable;