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@reactivex/rxjs

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Reactive Extensions for modern JavaScript

github.com/ReactiveX/RxJS

reactivex/rxjs

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import { Observable } from 'rxjs'; export declare function last<T, D = T>(this: Observable<T>, predicate?: null, defaultValue?: D): Observable<T | D>; export declare function last<T, S extends T>(this: Observable<T>, predicate: (value: T, index: number, source: Observable<T>) => value is S, defaultValue?: S): Observable<S>; export declare function last<T, D = T>(this: Observable<T>, predicate: (value: T, index: number, source: Observable<T>) => boolean, defaultValue?: D): Observable<T | D>;