Using more strict eslint rules

lib/helpers/isURLSameOrigin.js

@@ -7,7 +7,7 @@ module.exports = (
 
   // Standard browser envs have full support of the APIs needed to test
   // whether the request URL is of the same origin as current location.
-  (function () {
+  (function standardBrowserEnv() {
     var msie = /(msie|trident)/i.test(navigator.userAgent);
     var urlParsingNode = document.createElement('a');
     var originURL;
@@ -60,7 +60,7 @@ module.exports = (
   })() :
 
   // Non standard browser envs (web workers, react-native) lack needed support.
-  (function () {
+  (function nonStandardBrowserEnv() {
     return function isURLSameOrigin() {
       return true;
     };