import { Observable } from 'rxjs';
export declare type PropsHelper<Props> = {
    props: Props;
    props$: Observable<Props>;
    getProp<K extends keyof Props>(key: K): Observable<Props[K]>;
    getProps<Keys extends Array<keyof Props>>(...keys: Keys): Observable<{
        [Key in keyof Keys]: Keys[Key] extends keyof Props ? Props[Keys[Key]] : never;
    }>;
};
export declare const createGetProp: <Props>(props$: Observable<Props>) => <K extends keyof Props>(key: K) => Observable<Props[K]>;
export declare const createGetProps: <Props>(props$: Observable<Props>) => <Keys extends (keyof Props)[]>(...keys: Keys) => Observable<{ [Key in keyof Keys]: Keys[Key] extends keyof Props ? Props[Keys[Key]] : never; }>;