import { Observable } from 'rxjs';
export declare type ObservableOptions = {
    errorHandler?: (x: unknown) => void;
    onError?: (x: unknown) => void;
    timeout?: number;
};
export declare function useObservable<T>(observable: Observable<T>, options?: ObservableOptions): T | undefined;
export declare const useSubscription: <T>(observable: Observable<T>, next: (x: T) => void, error?: (x: unknown) => void, complete?: () => void) => void;