import { IterableX } from '../../iterable/iterablex';
export declare function toMapProto<TSource, TKey>(this: IterableX<TSource>, keySelector: (item: TSource) => TKey): Map<TKey, TSource>;
export declare function toMapProto<TSource, TKey, TElement = TSource>(this: IterableX<TSource>, keySelector: (item: TSource) => TKey, elementSelector?: (item: TSource) => TElement): Map<TKey, TElement>;
declare module '../../iterable/iterablex' {
    interface IterableX<T> {
        toMap: typeof toMapProto;
    }
}