Function reverseSwitchMap

reverseSwitchMap<T, O extends ObservableInput<any>>(
project: (value: T, index: number) => O,
): OperatorFunction<T, ObservedValueOf<O>>
Like switchMap, but subscribes to the new observable before unsubscribing from the old one. This prevents gaps in subscription coverage.
Type Parameters
- T
- O extends ObservableInput<any>
Parameters
- project: (value: T, index: number) => O
  A function that, when applied to an item emitted by the source Observable, returns an Observable.
Returns OperatorFunction<T, ObservedValueOf<O>>
- Defined in packages/relay/src/operators/reverse-switch-map.ts:12