How to select and combine the only active entity with ui

[mmpneo]

Hey, thank you for the Elf library!
I have an entity store that is supposed to provide only one active entity at max (so withActiveId() and selectActiveEntity()).
Right now i'm forced to use withActiveIds(), selectActiveEntities() and map it into [0], is there another way?

So i want this

_activeUser$: Observable<User> = store.combine({
    entities:   store.pipe(selectActiveEntities()),
    UIEntities: store.pipe(selectEntities({ref: UIEntitiesRef}))
  }).pipe(unionEntities(), map(value => value[0]));

to be like this

_activeUser$: Observable<User> = store.combine({
    entities:   store.pipe(selectActiveEntity()),
    UIEntities: store.pipe(selectEntity({ref: UIEntitiesRef}))
  }).pipe(unionEntities());

This is not a big deal, just feels a little bit dirty, because having withActiveIds() in a huge entity repo that is not supposed to provide multiple activeIds can be confusing.

[NetanelBasal]

This is abuse in my opinion. If you need only one active entity use selectActiveEntity. Then, you can do it manually:

store.combine({
  entity: store.pipe(selectActiveEntity()),
  UIEntity: store.pipe(selectActiveEntity({ ref: UIEntitiesRef }))
}).pipe(
  map(({ entity, UIEntity })=> ({ ...entity, ...UIEntity}))
)