useObservable

Callable

• useObservable<T>(source$: Observable<T>, initialValue: T, comparator?: (v1: T, v2: T) => boolean): T

---

• Returns a value provided by source$.

  The hook returns the initial value and subscribes on the source$. After that, the hook returns values which are provided by the source.

  @example

  const value = useObservable<string>(source$, undefined);

  ---

  Type parameters

  • T

  Parameters

  • source$: Observable<T>

    an observable for values

  • initialValue: T

    th first value which is returned by the hook

  • optionalcomparator: (v1: T, v2: T) => boolean

    a comparator for previous and next values

  Returns T