How to create a service available in the config section and beyond?

Question

Angular

It is necessary to make a simple configuration service (several string values), which then users of the module will be able to edit both in the config section, and further at any time. Something like a service of the Value type, but with the ability to use it in the config section as well.

Answer 1

Register a constant service, such as a string, a number, an array, an object or a function, with the $injector. Unlike value it can be injected into a module configuration function (see angular.Module) and it cannot be overridden by an Angular decorator.

angular.module('example').constant('config', {foo: 'bar'});

Answer 2

angular.module('example', [])
  .provider('MyService', function ($logProvider){
      var var1, var2;
      this.setVar1 = function(value){ var1 = value; }; 
      this.setVar2 = function(value){ var2 = value; }; 
      this.$get = function ($q){
          return new MyService();

          function MyService(){
              this.returnSomething = function (){
                  return $q.when('something ' + var1);
              };
          } 
      };
  });

In the config section, MyServiceProvider will be available with the setVar1, setVar2 methods.
The service will be an instance of MyService with the returnSomething method