import * as rxjs from 'rxjs';
import { Observable } from 'rxjs';
import { AbstractControl } from '@angular/forms';
import { ActivatedRoute } from '@angular/router';

type ExtractObservableType<A> = A extends Observable<infer B> ? B : never;
declare function combineLatestMap<TIn extends {
    [key: string]: Observable<any>;
}, TOut extends {
    [K in keyof TIn]: ExtractObservableType<TIn[K]>;
}>(observables: TIn): Observable<TOut>;

declare function filterNil<T>(): rxjs.MonoTypeOperatorFunction<T>;

declare function getControlValue<T>(control: AbstractControl): Observable<T>;

declare function getRouteParam<T>(route: ActivatedRoute, param: string): Observable<T | null>;

export { combineLatestMap, filterNil, getControlValue, getRouteParam };