Angular : read config file at runtime without using Promise

Asked Feb 17 '22 at 19:26

Active Feb 17 '22 at 19:26

Viewed 12 times

I'm trying to read a config file at runtime using Angular 12. In all the example I saw, a ConfigService class is used in conjuction with the APP_INITIALIZER to read the file using http.get when the app is initialized. All of them are using toPromise() (to wait until the file has been successfully read). However, toPromise will be deprecated in the next rxjs version.

So, how can we read a config file, at runtime, and make sure that the file has been read before the application can be used without using promises?

asked Feb 17 '22 at 19:26

user1861857

use lastValueFrom operator as mentioned on https://stackoverflow.com/questions/67044273/rxjs-topromise-deprecated – Aakash Garg Feb 17 '22 at 19:48
I think an APP_INITIALIZER also supports a plain observable now. Just make sure it completes. – MikeOne Feb 17 '22 at 20:22

Angular : read config file at runtime without using Promise

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