From 8ead26657e49afbd1bf9ff9009d6c71f97c37c7e Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Sat, 27 Apr 2024 18:05:21 -0400
Subject: [PATCH] perf(document): add fast path for applying non-nested
 virtuals to JSON

Re: #14394
---
 lib/document.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/lib/document.js b/lib/document.js
index b5f949b2fa5..8a9149ebbe9 100644
--- a/lib/document.js
+++ b/lib/document.js
@@ -4130,6 +4130,14 @@ function applyVirtuals(self, json, options, toObjectOptions) {
       }
       assignPath = path.substring(options.path.length + 1);
     }
+    if (assignPath.indexOf('.') === -1 && assignPath === path) {
+      v = clone(self.get(path, options ? { ...options, noDottedPath: true } : { noDottedPath: true }));
+      if (v === void 0) {
+        continue;
+      }
+      json[assignPath] = v;
+      continue;
+    }
     const parts = assignPath.split('.');
     v = clone(self.get(path), options);
     if (v === void 0) {