Merge pull request #1292 from MTRNord/promiseDeprecationWarnings

Fix deprecation warning about promise.defer()

src/languageHandler.js

@@ -231,35 +231,31 @@ export function getCurrentLanguage() {
 }
 
 function getLangsJson() {
-    const deferred = Promise.defer();
+    return new Promise((resolve, reject) => {
-
         request(
             { method: "GET", url: i18nFolder + 'languages.json' },
             (err, response, body) => {
                 if (err || response.status < 200 || response.status >= 300) {
-                deferred.reject({err: err, response: response});
+                    reject({err: err, response: response});
                     return;
                 }
-            deferred.resolve(JSON.parse(body));
+                resolve(JSON.parse(body));
             }
         );
-    return deferred.promise;
+    });
 }
 
 function getLanguage(langPath) {
-    const deferred = Promise.defer();
+    return new Promise((resolve, reject) => {
-
-    let response_return = {};
         request(
             { method: "GET", url: langPath },
             (err, response, body) => {
                 if (err || response.status < 200 || response.status >= 300) {
-                deferred.reject({err: err, response: response});
+                    reject({err: err, response: response});
                     return;
                 }
-
+                resolve(JSON.parse(body));
-            deferred.resolve(JSON.parse(body));
             }
         );
-    return deferred.promise;
+    });
 }