Handle errors better

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

js/src/utils/i18n.ts

@@ -0,0 +1,13 @@
+import Vue from 'vue';
+import VueI18n from 'vue-i18n';
+import messages from '@/i18n/index';
+
+const language = (window.navigator as any).userLanguage || window.navigator.language;
+
+Vue.use(VueI18n);
+
+export const i18n = new VueI18n({
+  locale: language.split('-')[0], // set locale
+  messages, // set locale messages
+  fallbackLocale: 'en_US',
+});