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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 reduce<T, R = T>(source: Iterable<T>, accumulator: (previousValue: R, currentValue: T, currentIndex: number) => R, seed?: never[]): R; export declare function reduce<T, R = T>(source: Iterable<T>, accumulator: (previousValue: R, currentValue: T, currentIndex: number) => R, seed?: R): R;