From bb82b4a95d8cc706d080214ec2278f060cc5ff34 Mon Sep 17 00:00:00 2001
From: Yury Puzynya <3y3@ya.ru>
Date: Mon, 14 Apr 2025 03:05:07 +0000
Subject: [PATCH] Omit micromark parsing if there is no related rules

---
 lib/markdownlint.mjs | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/lib/markdownlint.mjs b/lib/markdownlint.mjs
index 7930cb83..26a855ff 100644
--- a/lib/markdownlint.mjs
+++ b/lib/markdownlint.mjs
@@ -490,12 +490,14 @@ function lintContent(
   const needMarkdownItTokens = enabledRuleList.some(
     (rule) => (rule.parser === "markdownit") || (rule.parser === undefined)
   );
+  const needMicromarkTokens = enabledRuleList.some(
+    (rule) => (rule.parser === "micromark")
+  );
   const customRulesPresent = (ruleList.length !== rules.length);
   // Parse content into parser tokens
-  const micromarkTokens = micromarkParse(
-    content,
-    { "freezeTokens": customRulesPresent }
-  );
+  const micromarkTokens = needMicromarkTokens ?
+    micromarkParse(content, { "freezeTokens": customRulesPresent }) :
+    [];
   // Hide the content of HTML comments from rules
   const preClearedContent = content;
   content = helpers.clearHtmlCommentText(content);