From 9198cdface74f64e37820f22af451df863557f57 Mon Sep 17 00:00:00 2001
From: Robert Lin <robertlin1@gmail.com>
Date: Sun, 14 Jun 2020 20:27:55 +0800
Subject: [PATCH] feat($theme-default): allow 'auto' in defined sidebars
 (close: #1252) (#2380)

---
 packages/@vuepress/theme-default/util/index.js   | 3 +++
 packages/docs/docs/theme/default-theme-config.md | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/packages/@vuepress/theme-default/util/index.js b/packages/@vuepress/theme-default/util/index.js
index 23e78f83c1..4433bb3c5f 100644
--- a/packages/@vuepress/theme-default/util/index.js
+++ b/packages/@vuepress/theme-default/util/index.js
@@ -138,6 +138,9 @@ export function resolveSidebarItems (page, regularPath, site, localePath) {
     return []
   } else {
     const { base, config } = resolveMatchingConfig(regularPath, sidebarConfig)
+    if (config === 'auto') {
+      return resolveHeaders(page)
+    }
     return config
       ? config.map(item => resolveItem(item, pages, base))
       : []
diff --git a/packages/docs/docs/theme/default-theme-config.md b/packages/docs/docs/theme/default-theme-config.md
index 03b5ef7734..84cb68fefc 100644
--- a/packages/docs/docs/theme/default-theme-config.md
+++ b/packages/docs/docs/theme/default-theme-config.md
@@ -273,6 +273,8 @@ module.exports = {
         'four'   /* /bar/four.html */
       ],
 
+      '/baz/': 'auto', /* automatically generate single-page sidebars */
+
       // fallback
       '/': [
         '',        /* / */