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rxjs

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Reactive Extensions for modern JavaScript

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import { OperatorFunction, MonoTypeOperatorFunction } from '../interfaces'; export declare function filter<T, S extends T>(predicate: (value: T, index: number) => value is S, thisArg?: any): OperatorFunction<T, S>; export declare function filter<T>(predicate: (value: T, index: number) => boolean, thisArg?: any): MonoTypeOperatorFunction<T>;