Angular 6 Services: providedIn: 'root' vs CoreModule

Question

With Angular 6, below is the preferred way to create singleton services:

import { Injectable } from \'@angular/core\';

@Injectable({
  providedIn: \'root\',
})
         


        

Answer 1

And what about interceptors and guards? This things can be global I guess. I agree with your consideration about CoreModule doesn't have declarations and only pure services, but I think Guards and Interceptors should be considerate too.