From 9049d480ab176d0e53da3c1b859d28851703c13a Mon Sep 17 00:00:00 2001
From: ULIVZ <chenhaoli@bytedance.com>
Date: Sun, 26 Feb 2023 01:02:48 +0800
Subject: [PATCH] fix(types): missing types for `initialOpenGroupIndex` (close:
 #3129) (#3130)

---
 packages/@vuepress/types/src/theme-default.ts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/packages/@vuepress/types/src/theme-default.ts b/packages/@vuepress/types/src/theme-default.ts
index bc55cd7446..9f0613d722 100644
--- a/packages/@vuepress/types/src/theme-default.ts
+++ b/packages/@vuepress/types/src/theme-default.ts
@@ -81,6 +81,14 @@ export type SidebarItem4Group = {
    * Sidebar's depth.
    */
   sidebarDepth?: number;
+  /**
+   * By default the first subgroup is opened initially.
+   * You can change this using the `initialOpenGroupIndex`:
+   * Specify an index to open another subgroup or use `-1` for no open group.
+   *
+   * @default 0
+   */
+  initialOpenGroupIndex?: number;
   /**
    * Sidebar children.
    */