From e14b1a8bf107e311e565842628fe6b7859dedb49 Mon Sep 17 00:00:00 2001
From: Northword <44738481+northword@users.noreply.github.com>
Date: Sat, 23 Sep 2023 17:33:02 +0800
Subject: [PATCH] fix: injection of `frontmatter.head` fails when it does not
 exist

---
 packages/plugin-baidu-tongji/src/node/plugin.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/plugin-baidu-tongji/src/node/plugin.ts b/packages/plugin-baidu-tongji/src/node/plugin.ts
index 5b10b275..76a08941 100644
--- a/packages/plugin-baidu-tongji/src/node/plugin.ts
+++ b/packages/plugin-baidu-tongji/src/node/plugin.ts
@@ -8,6 +8,7 @@ export const baiduTongjiPlugin = ({ key = '' }: BaiduTongjiOptions): Plugin => {
   return {
     name: '@vuepress-plume/vuepress-plugin-baidu-tongji',
     extendsPage: (page) => {
+      page.frontmatter.head = page.frontmatter.head || [];
       page.frontmatter.head?.push([
         'script',
         {