From cc388d9c84e44a9b7d990dfbd3023aaf20494ecd Mon Sep 17 00:00:00 2001
From: Martin Krisnanto Putra <grygrflzr@hotmail.com>
Date: Tue, 20 Feb 2024 23:01:03 +0900
Subject: [PATCH] docs: add canonical url in head (#15984)

---
 docs/.vitepress/config.ts | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/docs/.vitepress/config.ts b/docs/.vitepress/config.ts
index 6222cdbd530af3..ad88cf1e2618dc 100644
--- a/docs/.vitepress/config.ts
+++ b/docs/.vitepress/config.ts
@@ -331,5 +331,16 @@ export default defineConfig({
       level: [2, 3],
     },
   },
+  transformPageData(pageData) {
+    const canonicalUrl = `${ogUrl}/${pageData.relativePath}`
+      .replace(/\/index\.md$/, '/')
+      .replace(/\.md$/, '/')
+    pageData.frontmatter.head ??= []
+    pageData.frontmatter.head.unshift([
+      'link',
+      { rel: 'canonical', href: canonicalUrl },
+    ])
+    return pageData
+  },
   buildEnd,
 })