Q:

Why can't I use the localStorage in my .config when it's include in the .module definition?

I have the following:
var app = angular
    .module('app', ['ui.router', 'admin', 'home', 'questions', 'ngResource', 'LocalStorageModule'])
    .config(['$sceProvider', '$stateProvider', '$locationProvider', 'localStorageService',
        function ($sceProvider, $stateProvider, $locationProvider, localStorageService ) {

        $sceProvider.enabled(false);
        $locationProvider.html5Mode(true);

        localStorageService.add('adminContent', 'xx');

This is giving me an error:
Uncaught Error: [$injector:modulerr] Failed to instantiate module app due to:
Error: [$injector:unpr] Unknown provider: localStorageService
http://errors.angularjs.org/1.2.0-rc.2/$injector/unpr?p0=localStorageService
    at hasOwnPropertyFn (http://127.0.0.1:81/Scripts/angular-v1.2.0-rc.2.js:78:12)
    at http://127.0.0.1:81/Scripts/angular-v1.2.0-rc.2.js:2997:19
    at getService (http://127.0.0.1:81/Scripts/angular-v1.2.0-rc.2.js:3119:39)
    at Object.invoke (http://127.0.0.1:81/Scripts/angular-v1.2.0-rc.2.js:3140:13)
    at http://127.0.0.1:81/Scripts/angular-v1.2.0-rc.2.js:3078:37
    at Array.forEach (native)
    at forEach (http://127.0.0.1:81/Scripts/angular-v1.2.0-rc.2.js:224:11)
    at loadModules (http://127.0.0.1:81/Scripts/angular-v1.2.0-rc.2.js:3065:5)
    at createInjector (http://127.0.0.1:81/Scripts/angular-v1.2.0-rc.2.js:3007:11)
    at doBootstrap (http://127.0.0.1:81/Scripts/angular-v1.2.0-rc.2.js:1152:20)
http://errors.angularjs.org/1.2.0-rc.2/$injector/modulerr?p0=app&p1=Error%3…http%3A%2F%2F127.0.0.1%3A81%2FScripts%2Fangular-v1.2.0-rc.2.js%3A1152%3A20) 

Is it not possible to use localStorage in config like this? I have included the code for the localstorage module and it's loaded before the app.js.  It works in other parts of the application, but the same line does not work when placed in the app.config

A:

Only providers and constants are injectable in configuration blocks. See the AngularJs documentation for more insights: http://docs.angularjs.org/guide/module (sektion "Module Loading & Dependencies").

Configuration blocks - get executed during the provider registrations
  and configuration phase. Only providers and constants can be injected
  into configuration blocks. This is to prevent accidental instantiation
  of services before they have been fully configured.

