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- import { ObservableInput, ObservedValueOf, OperatorFunction } from '../types';
- /**
- * Applies an accumulator function over the source Observable where the
- * accumulator function itself returns an Observable, emitting values
- * only from the most recently returned Observable.
- *
- * <span class="informal">It's like {@link mergeScan}, but only the most recent
- * Observable returned by the accumulator is merged into the outer Observable.</span>
- *
- * @see {@link scan}
- * @see {@link mergeScan}
- * @see {@link switchMap}
- *
- * @param accumulator
- * The accumulator function called on each source value.
- * @param seed The initial accumulation value.
- * @return A function that returns an observable of the accumulated values.
- */
- export declare function switchScan<T, R, O extends ObservableInput<any>>(accumulator: (acc: R, value: T, index: number) => O, seed: R): OperatorFunction<T, ObservedValueOf<O>>;
- //# sourceMappingURL=switchScan.d.ts.map
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