fix(i18n): init method returns a promise

before start, the app has to start all is ready

src/i18n.js

@@ -11,16 +11,6 @@ i18n
     // learn more: https://github.com/i18next/i18next-browser-languageDetector
     .use(LanguageDetector)
     // pass the i18n instance to react-i18next.
-    .use(initReactI18next)
-    // init i18next
-    // for all options read: https://www.i18next.com/overview/configuration-options
-    .init({
-        fallbackLng: 'en',
-        debug: true,
-
-        interpolation: {
-            escapeValue: false, // not needed for react as it escapes by default
-        },
-    });
+    .use(initReactI18next);
 
 export default i18n;

src/index.js

@@ -1,11 +1,23 @@
 import React from 'react';
 import ReactDOM from 'react-dom';
 import App from './App';
-import './i18n';
+import i18n from './i18n';
 
-ReactDOM.render(
-    <App />,
-    document.getElementById('app'), //  eslint-disable-line no-undef
-);
+i18n
+    .init({
+        lng: 'es',
+        fallbackLng: 'en',
+        debug: process.env.NODE_ENV === 'development',
+        interpolation: {
+            escapeValue: false, // not needed for react as it escapes by default
+        },
+        initImmediate: false
+    })
+    .then(() => {
+        ReactDOM.render(
+            <App />,
+            document.getElementById('app'), //  eslint-disable-line no-undef
+        );
 
-module.hot.accept();
+        module.hot.accept();
+    });