Request status grouping

[strigefleur]

Setup: some requests get-todo-${number} that can fire any time, so there's a combination of request states to know if any is pending like this

combineLatest([
  selectIsRequestPending('get-todo-1203'),
  selectIsRequestPending('get-todo-205'),
  selectIsRequestPending('get-todo-34'),
  ...]).pipe(map([a, b, c, ...]) => a || b || c || ...)

However it's possible to combine as such only having request keys beforehead. Now imagine every get-todo-${number} is built dynamically, so that it still takes to know status of every single request on the one hand and also status of any get-todo-? pending on the other hand.

So for the second option you don't know or care for what stands for ? within get-todo-?. Currently that's what I come for:

isAnyTodoLoading$ = store.pipe(
      select((st) => st.requestsStatus),
      map(
         (x) =>
            Object.entries(x).filter(
               (e) =>
                  e[1].value === 'pending' &&
                  e[0].startsWith('get-todo-')
            ).length > 0
      )
   );

Doesn't look clean and all so I thought I could miss something related within Elf itself. Did I?
It appears there's some request groupKey in the docs but not really helpful with no real usage example.

[NetanelBasal]

The groupKey isn't related to this. Your way is valid. You can abstract it into a reusable operator.

[strigefleur]

Is there some typescriptish way to express that 'get-todo-' string via typed store requests defined like this?

type TodoRequests = `get-todo-${number} | ...`