import { Observable } from 'rxjs';
import { ReactiveValue } from './reactive';

type WatchListItem<T> = {
    index: number;
    value: T;
    change: 'added' | 'removed';
};
export type WatchList<T> = Array<WatchListItem<T>>;
export declare function watchList<T>(list: ReactiveValue<T[]>): Observable<WatchList<T>>;
export declare function getAdditionalCommonElements<T>({ previousArray, nextArray, }: {
    previousArray: T[];
    nextArray: T[];
}): {
    value: T;
    index: number;
}[];
export {};