1 export default {

     2   name: 'i18n',

     3   initialize: function( instance ) {

     4     instance.lookup('service:i18n').set('locale', calculateLocale());

     5   }

     6 };

     7 

     8 function calculateLocale() {

     9   // whatever you do to pick a locale for the user:

    10   return navigator.language || navigator.userLanguage || 'fr-FR';

    11 }