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@reactivex/ix-esnext-esm

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The Interactive Extensions for JavaScript

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export declare function sum(source: AsyncIterable<number> | Iterable<number>, selector?: (x: number) => number | Promise<number>): Promise<number>; export declare function sum<T>(source: AsyncIterable<T> | Iterable<T>, selector: (x: T) => number | Promise<number>): Promise<number>;