function mailgo instead of const

lib/mailgo.js

@@ -1008,7 +1008,7 @@ var mailgoStyle = function mailgoStyle() {
 }; // mailgo
 
 
-var mailgo = function mailgo(mailgoConfig) {
+function mailgo(mailgoConfig) {
   // if the window is defined...
   if (window && typeof window !== "undefined") {
     // add the style for mailgo
@@ -1022,7 +1022,8 @@ var mailgo = function mailgo(mailgoConfig) {
       mailgoInit(mailgoConfig);
     }
   }
-};
+}
+
 /* harmony default export */ var src_mailgo = (mailgo);
 // CONCATENATED MODULE: ./mailgo.lib.ts
 // webpack > lib/mailgo.js