tap.js

const load = mapPropsStream(props$ =>
  props$.pipe(
    switchMap(props =>
      from(fetchUsers()).pipe(
        tap(res => console.log('response from fetchUsers', res),
        map(users => ({ ...props, users, status: 'SUCCESS' })),
        startWith({ status: 'REQUEST' })
      )
    ),
    catchError(() => ({ status: 'ERROR', message: 'Looks like our service is down' }))
  )
)