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@reactivex/ix-es5-esm

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The Interactive Extensions for JavaScript

github.com/ReactiveX/IxJS

ReactiveX/IxJS

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export declare function extremaBy<TSource, TKey>(source: AsyncIterable<TSource>, selector: (item: TSource, signal?: AbortSignal) => TKey | Promise<TKey>, comparer: (left: TKey, right: TKey, signal?: AbortSignal) => number | Promise<number>, signal?: AbortSignal): Promise<TSource[]>;