AngularJS constants depending on other constants - any established patterns?

I'd like to be able to define Angular constants in terms of other constants.

It's not possible to inject dependencies into Angular constant services. When I want one of my constants to depend on another of my constants, I use a provider service. This allows my constants to have dependencies (on other constants), but still be used in my .config method call.

This sets off my code smell for two reasons.

-
I'm using a full-blown call to provider when I'm really just defining a constant. It's just that some constants are defined in terms of other constants, and I want to be able to use any of these constants in my .config call.

-
I'm injecting providers into my .config call and then manually calling their $get methods. This seems to just be bypassing some of the tools Angular gives me. It seems to me if I'm calling $get in my own code, it may be a sign that I'm fighting the framework.

Here's some sample code that shows the above in action. It defines a constant service that's an enumeration type, then it defines another constant service that depends on the enumeration type, and last it calls the .config method, injecting the dependent constant service:

```
app.constant('authLevel', {
Public: "Public",
Admin: "Admin",
SuperAdmin: "SuperAdmin"
});

app.provider("routes", function (authLevel) {

var routes = [
{
path: "/",
controller: "mapsController",
templateUrl: "templates/mapsView.html",
navBarLabel: "LEFT_NAV_BAR.MAPS_NAV_LABEL",
navBarIconClass: "fa-map-marker",
authLevels: [authLevel.Public, authLevel.Admin, authLevel.SuperAdmin],
},
{
path: "/markers",
controller: "markersController",
templateUrl: "templates/markerListView.html",
navBarLabel: "LEFT_NAV_BAR.TABLE_NAV_LABEL",
navBarIconClass: "fa-table",
authLevels: [authLevel.SuperAdmin],
}
];

Using an IIFE seems to be the tidiest way I've found to do it. This allows you to define your constant as a function (that is immediately invoked) that returns your constant object so you can use it as normal, i.e: LABELS.appName

.constant('LABELS', (function () {
    var self = {};
    self.appName = 'MyApp';
    self.companyName = 'MyCompany';
    self.appHeader = self.appName + ' | ' + self.companyName;
    return self;
})());//function is immediately invoked here

References:

• SO answer

• Use functions (IIFE) to define AngularJS constants and values

StackExchange Code Review Q#49558, answer score: 6