switchMapSuspended()

Like switchMap, but applying a startWith(SUSPENSE) to the inner Observable.

function switchMapSuspended<T, O extends ObservableInput<any>>(project: (value: T, index: number) => O):
OperatorFunction<T, ObservedValueOf<O> | typeof SUSPENSE>;

Arguments

  • project: A function that, when applied to an item emitted by the source Observable, returns an Observable.

Returns

OperatorFunction<T, ObservedValueOf<O> | typeof SUSPENSE>: An Observable that emits the result of applying the projection function to each item emitted by the source Observable, and taking only the values from the most recently projected inner Observable, prepended with SUSPENSE.

Example

import { switchMapSuspended } from '@react-rxjs/utils'
const story$ = selectedStoryId$.pipe(switchMapSuspended(getStory$))

See also