rename object key in index without changing it's position

Author: meabed

lib/schema.js

@@ -2037,11 +2037,9 @@ Schema.prototype.index = function(fields, options) {
   }
   for (const key in fields) {
     if (this.aliases[key]) {
-      fields[this.aliases[key]] = fields[key];
-      delete fields[key];
+      fields = utils.renameObjKey(fields, key, this.aliases[key]);
     }
   }
-
   for (const field of Object.keys(fields)) {
     if (fields[field] === 'ascending' || fields[field] === 'asc') {
       fields[field] = 1;

lib/utils.js

@@ -983,7 +983,7 @@ exports.renameObjKey = function (oldObj, oldKey, newKey) {
       }
       return acc;
     },
-    {} as Record<string, unknown>
+    {}
   );
 }