chore(client): migrate i18n/configForTest.js to TS (#45624)

client/i18n/config-for-tests.ts

@@ -0,0 +1,21 @@
+import i18n from 'i18next';
+import { initReactI18next } from 'react-i18next';
+
+i18n
+  .use(initReactI18next)
+  .init({
+    debug: true,
+    defaultNS: 'translations',
+    fallbackLng: 'en',
+    interpolation: {
+      escapeValue: false
+    },
+    lng: 'en',
+    ns: ['translations'],
+    resources: { en: { translations: {} } }
+  })
+  .catch((error: Error) => {
+    throw Error(error.message);
+  });
+
+export default i18n;

client/i18n/configForTests.js

@@ -1,16 +0,0 @@
-import i18n from 'i18next';
-import { initReactI18next } from 'react-i18next';
-
-i18n.use(initReactI18next).init({
-  debug: true,
-  defaultNS: 'translations',
-  fallbackLng: 'en',
-  interpolation: {
-    escapeValue: false
-  },
-  lng: 'en',
-  ns: ['translations'],
-  resources: { en: { translations: {} } }
-});
-
-export default i18n;

client/src/components/app-mount-notifier.test.tsx

@@ -4,7 +4,7 @@ import { I18nextProvider } from 'react-i18next';
 import { Provider } from 'react-redux';
 
 import { i18nextCodes } from '../../../config/i18n/all-langs';
-import i18nTestConfig from '../../i18n/configForTests';
+import i18nTestConfig from '../../i18n/config-for-tests';
 import { createStore } from '../redux/createStore';
 import AppMountNotifier from './app-mount-notifier';