fix(theme): sidebar is taken from the filename when the first letter is capitalized.

Author: hacxy

__tests__/e2e/.vitepress/config.mts

@@ -0,0 +1,21 @@
+import type { ThemeConfig } from 'vitepress-theme-mild';
+import { defineConfigWithTheme } from 'vitepress';
+import baseConfig from 'vitepress-theme-mild/config';
+
+export default defineConfigWithTheme<ThemeConfig>({
+  title: 'My Awesome Project',
+  description: 'A VitePress Site',
+  extends: baseConfig,
+  themeConfig: {
+    nav: [
+      { text: 'Home', link: '/' },
+      { text: 'Examples', link: '/markdown-examples' }
+    ],
+    sidebar: {
+      '/posts/category/': 'auto'
+    },
+    socialLinks: [
+      { icon: 'github', link: 'https://github.com/vuejs/vitepress' }
+    ]
+  }
+});

__tests__/e2e/.vitepress/config.ts

@@ -0,0 +1,3 @@
+import MildTheme from 'vitepress-theme-mild';
+
+export default MildTheme;

__tests__/e2e/.vitepress/theme/index.ts

@@ -1,24 +1,5 @@
 ---
 # https://vitepress.dev/reference/default-theme-home-page
-layout: home
+layout: blog
 
-hero:
-  name: "My Awesome Project"
-  text: "A VitePress Site"
-  tagline: My great project tagline
-  actions:
-    - theme: brand
-      text: Markdown Examples
-      link: /markdown-examples
-    - theme: alt
-      text: API Examples
-      link: /api-examples
-
-features:
-  - title: Feature A
-    details: Lorem ipsum dolor sit amet, consectetur adipiscing elit
-  - title: Feature B
-    details: Lorem ipsum dolor sit amet, consectetur adipiscing elit
-  - title: Feature C
-    details: Lorem ipsum dolor sit amet, consectetur adipiscing elit
 ---

__tests__/e2e/api-examples.md

@@ -16,6 +16,17 @@
     "vitepress",
     "vitepress-theme"
   ],
+  "exports": {
+    ".": {
+      "types": "./types/index.d.ts",
+      "import": "./index.js"
+    },
+    "./config": {
+      "types": "./config/index.d.ts",
+      "import": "./config/index.js"
+    }
+  },
+  "main": "./index.js",
   "module": "./index.js",
   "types": "./types/index.d.ts",
   "files": [

__tests__/e2e/index.md

@@ -3,6 +3,7 @@ import path from 'node:path';
 import { isObject } from '@vueuse/core';
 import directoryTree from 'directory-tree';
 import matter from 'gray-matter';
+import { capitalizeFirstFormat } from '../../../shared/utils';
 import { ensureIndexMd, normalizePath } from '../node/path';
 
 // sidebar排序, 越小越靠前
@@ -94,7 +95,8 @@ export function formatSidebarItems(item: any, PATH: string, config: SiteConfig,
     normalizePath(path.relative(config.srcDir, PATH))
       .replace(/(^|\/)index\.md$/, '$1')
       .replace(/\.md$/, config.cleanUrls ? '' : '.html')}`;
-  const filename = link.split('/')[link.split('/').length - 1].split('.')[0];
+  const originFilename = link.split('/')[link.split('/').length - 1].split('.')[0];
+  const filename = capitalizeFirstFormat(originFilename);
   const article = data.get(ensureIndexMd(PATH));
   const content = matter(article?.src || '').content;
   const match = content.match(/^(#+)\s+(.+)/m);

__tests__/e2e/markdown-examples.md

@@ -6,3 +6,9 @@ export function isString(value?: any): value is string {
     return false;
   }
 }
+
+export function capitalizeFirstFormat(str: string | undefined) {
+  if (typeof str !== 'string' || !str.length)
+    return str;
+  return str[0].toUpperCase() + str.slice(1).toLowerCase();
+}