Function onUnsubscribe

onUnsubscribe<T>(teardown): ((source) => Observable<T>)
Calls the given teardown function when the subscriber unsubscribes. Completion and an error send by the observable will lead to unsubscribing and therefore also trigger a call of the given teardown function.
Type Parameters
- T
Parameters
- teardown: (() => void)
  
  function that should be called
  - - (): void
    - Returns void
Returns ((source) => Observable<T>)
- - (source): Observable<T>
  - Parameters
    - source: Observable<T>
    Returns Observable<T>
- Defined in operators/on-unsubscribe.ts:10

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