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@reactivex/rxjs

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Reactive Extensions for modern JavaScript

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import { Observable, ObservableInput, SchedulerLike } from 'rxjs'; export declare function expand<T, R>(this: Observable<T>, project: (value: T, index: number) => ObservableInput<R>, concurrent?: number, scheduler?: SchedulerLike): Observable<R>; export declare function expand<T>(this: Observable<T>, project: (value: T, index: number) => ObservableInput<T>, concurrent?: number, scheduler?: SchedulerLike): Observable<T>;