It is a good practice to use one component per file. There is rarely a need to introduce a variable to a module. The developers should declare modules without variable declaration.
var app = angular.module('app', [
'ngAnimate',
'ngRoute',
'app.shared',
'app.dashboard'
]);
angular
.module('app', [
'ngAnimate',
'ngRoute',
'app.shared',
'app.dashboard'
]);