Refactoring day1

node_modules/mongoose/lib/schema/string.js

@@ -516,10 +516,6 @@ SchemaString.prototype.match = function match(regExp, message) {
       return false;
     }
 
-    // In case RegExp happens to have `/g` flag set, we need to reset the
-    // `lastIndex`, otherwise `match` will intermittently fail.
-    regExp.lastIndex = 0;
-
     const ret = ((v != null && v !== '')
       ? regExp.test(v)
       : true);