How to use Global Dependencies in AngularJS without breaking DI

gistfile1.js

var underscore = angular.module(‘underscore’, []); 

underscore.factory(‘_’, function() { 
  return window._; //Underscore must already be loaded on the page 
}); 

var app = angular.module(‘app’, ['underscore']); 

app.controller(‘MainCtrl’, ['$scope', '_', function($scope, _) { 
  
  init = function() { 
    _.keys($scope); 
  } 
  
  init(); 
  
}]);