a

backend/node_modules/mongoose/lib/helpers/indexes/applySchemaCollation.js

@@ -0,0 +1,13 @@
+'use strict';
+
+const isTextIndex = require('./isTextIndex');
+
+module.exports = function applySchemaCollation(indexKeys, indexOptions, schemaOptions) {
+  if (isTextIndex(indexKeys)) {
+    return;
+  }
+
+  if (Object.hasOwn(schemaOptions, 'collation') && !Object.hasOwn(indexOptions, 'collation')) {
+    indexOptions.collation = schemaOptions.collation;
+  }
+};