In the parameter$ helper function you convert the promise to the Observable

As far as the promise emits values only once, we need to complete the observable after getting a value from the promise. We need to add subscriber.complete(); after line 31
Or better use from(ensureInitialized(remoteConfig)).pipe(map(...))
In the

parameter$helper function you convert the promise to the ObservableAs far as the promise emits values only once, we need to complete the observable after getting a value from the promise. We need to add
subscriber.complete();after line 31Or better use
from(ensureInitialized(remoteConfig)).pipe(map(...))