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@reactivex/ix-esnext-esm

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The Interactive Extensions for JavaScript

github.com/ReactiveX/IxJS

ReactiveX/IxJS

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export declare function toMap<TSource, TKey>(source: AsyncIterable<TSource>, keySelector: (item: TSource) => TKey | Promise<TKey>): Promise<Map<TKey, TSource>>; export declare function toMap<TSource, TKey, TElement = TSource>(source: AsyncIterable<TSource>, keySelector: (item: TSource) => TKey | Promise<TKey>, elementSelector?: (item: TSource) => TElement | Promise<TElement>): Promise<Map<TKey, TElement>>;