With NGRX 8 and createAction, how can I use strongly-typed #Effect? - ngrx

Question

I'm migrating a large codebase from NGRX 7 to 8.
My actions look like this:
export class DeleteRecordAction implements Action {
readonly type = ActionTypes.DELETE_RECORD;
constructor(public payload: IRecord);
}
export class DeleteRecordSuccessAction implements Action {
readonly type = ActionTypes.DELETE_RECORD_SUCCESS;
}
export class DeleteRecordFailureAction implements Action {
readonly type = ActionTypes.DELETE_RECORD_FAILURE;
}
and my effects look like this (note the strongly-typed return Observable):
#Effect() deleteRecord$: Observable<DeleteRecordSuccessAction | DeleteRecordFailureAction> =
this.actions$.pipe(
ofType<Actions.DeleteRecordAction>(ActionTypes.DELETE_RECORD),
switchMap((action) => this.recordService.deleteRecord(action.payload).pipe(
map((result) => new Actions.DeleteRecordSuccessAction()),
catchError((err) => of(new Actions.DeleteRecordFailureAction())),
)),
);
I'm trying to migrate the actions to use the new createAction syntax, which is easy enough:
export const DeleteRecordAction = createAction('[FOO] Delete Record', props<{ payload: IRecord }>());
export const DeleteRecordSuccessAction = createAction('[FOO] Delete Record Success');
export const DeleteRecordFailureAction = createAction('[FOO] Delete Record Failure');
but now my #Effect won't compile at the following line:
#Effect() deleteRecord$: Observable<DeleteRecordSuccessAction | DeleteRecordFailureAction> =
with the errors:
TS2749: 'DeleteRecordSuccessAction' refers to a value, but is being used as a type here.
TS2749: 'DeleteRecordFailureAction' refers to a value, but is being used as a type here.
I can remove the strong-typing from the #Effect return value and just use the generic Action, like this:
#Effect() deleteRecord$: Observable<Action> =
but then I lose the useful type-checking of the return values, thereby making the code more error-prone.
The new createEffect method doesn't seem to help. Is there a way to use NGRX 8 while retaining strong-typing on effects? Or should I just stick with NGRX 7 syntax?