forkjoin returns no results

Question

I\'m using forkJoin to combine the results of two firebase requests

Both requests complete and log within the console, but the map function for the forkJoin itself does

Answer 1

This is my use case with Firestore.

 import { Observable } from 'rxjs/Observable';
 import { combineLatest } from 'rxjs/observable/combineLatest';

 constructor((){}

getAllBudgetGroups() {
    const loading = this.loadingProvider.presentLoader();
    try {
     this.budgetGroups$ = this.budgetGroupProvider.getAllTempBudgetGroups().valueChanges();
     this.defaultBudgetGroups$ = this.budgetGroupProvider.getDefaultBudgetGroups().valueChanges();
     combineLatest(this.budgetGroups$, this.defaultBudgetGroups$).subscribe(([res1, res2]) => {
        this.budgetGroupSortedList = concat(res1, res2);
        this.loadingProvider.dismissLoader(loading);
     }, err => {
        console.log(err);
        this.loadingProvider.dismissLoader(loading);
      });
    }
    catch (err) {
      console.log(err);
      this.loadingProvider.dismissLoader(loading);
    }
  }