Two Observables are being returned from different services, each providing only one value (similar to Observable.just()). In TypeScript, types play a crucial role in this context.
Is there a method to determine when both Observables have been resolved (in terms of promises), whether successful or failed? It is essential to handle failures individually and proceed accordingly.
Here's a hypothetical scenario:
const obs1 = someService.getThisThing(); //Observable<Type1>
const obs2 = someService.getAnotherThing(); //Observable<Type2>
const someObj = {};
obs1.subscribe(v1 => someObj.v1 = v1);
obs2.subscribe(v2 => someObj.v2 = v2);
// Invoke someFunc(someObj) only when both observables above return a value
someFunc(someObj);
I attempted using merge, but encountered the loss of type safety due to unordered values. This approach required me to inspect types within .subscribe.
I also experimented with combine and combineLatest as mentioned here; however, they both resolve simultaneously, leading to a complete failure if even one Observable encounters an error.