convert more promise chains to async await

Signed-off-by: Tilman Vatteroth <tilman.vatteroth@tu-dortmund.de>

src/initializers/configLoader.ts

@@ -3,22 +3,18 @@ import {setFrontendConfig} from "../redux/frontend-config/methods";
 import {setBackendConfig} from "../redux/backend-config/methods";
 import {getAndSetUser} from "../utils/apiUtils";
 
-export function loadAllConfig() {
+export async function loadAllConfig() {
-    return getFrontendConfig()
+    const frontendConfig = await getFrontendConfig();
-        .then((frontendConfig) => {
     if (!frontendConfig) {
         return Promise.reject("Frontend config empty!");
     }
     setFrontendConfig(frontendConfig);
-            return getBackendConfig()
+
-        })
+    const backendConfig = await getBackendConfig()
-        .then((backendConfig) => {
     if (!backendConfig) {
         return Promise.reject("Backend config empty!");
     }
     setBackendConfig(backendConfig)
-        }).then(() => {
-            getAndSetUser();
-        })
-}
 
+    await getAndSetUser();
+}

src/initializers/i18n.ts

@@ -31,18 +31,11 @@ import "moment/locale/vi";
 import "moment/locale/zh-cn";
 import "moment/locale/zh-tw";
 
-export function setUpI18n() {
+export async function setUpI18n() {
-    return i18n
+    await i18n
-        // load translation using http -> see /public/locales
-        // learn more: https://github.com/i18next/i18next-http-backend
         .use(Backend)
-        // detect user language
-        // 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,
@@ -53,9 +46,9 @@ export function setUpI18n() {
             interpolation: {
                 escapeValue: false, // not needed for react as it escapes by default
             },
-        }).then(() => {
-            moment.locale(i18n.language);
         })
+
+    moment.locale(i18n.language);
 }