feat: plugin clean urls

packages/@vuepress/plugin-clean-urls/.npmignore

@@ -0,0 +1,3 @@
+__tests__
+__mocks__
+.temp

packages/@vuepress/plugin-clean-urls/README.md

@@ -0,0 +1,5 @@
+# @vuepress/plugin-clean-urls
+
+> clean urls plugin for vuepress
+
+See [documentation](https://vuepress.vuejs.org/plugin/official/plugin-clean-urls.html).

packages/@vuepress/plugin-clean-urls/index.js

@@ -0,0 +1,22 @@
+module.exports = (options = {}, context) => {
+  const {
+    normalSuffix = '',
+    indexSuffix = '/'
+  } = options
+
+  return {
+    extendPageData (page) {
+      const { regularPath, frontmatter = {}} = page
+      if (frontmatter.permalink) return
+      if (regularPath.endsWith('.html')) {
+        // normal path
+        // e.g. foo/bar.md -> foo/bar.html
+        page.path = regularPath.slice(0, -5) + normalSuffix
+      } else if (regularPath.endsWith('/')) {
+        // index path
+        // e.g. foo/index.md -> foo/
+        page.path = regularPath.slice(0, -1) + indexSuffix
+      }
+    }
+  }
+}

packages/@vuepress/plugin-clean-urls/package.json

@@ -0,0 +1,26 @@
+{
+  "name": "@vuepress/plugin-clean-urls",
+  "version": "1.0.0-alpha.39",
+  "description": "clean urls plugin for vuepress",
+  "main": "index.js",
+  "publishConfig": {
+    "access": "public"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/vuejs/vuepress.git",
+    "directory": "packages/@vuepress/plugin-clean-urls"
+  },
+  "keywords": [
+    "documentation",
+    "vue",
+    "vuepress",
+    "generator"
+  ],
+  "author": "Shigma <[email protected]>",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/vuejs/vuepress/issues"
+  },
+  "homepage": "https://github.com/vuejs/vuepress/packages/@vuepress/plugin-clean-urls#readme"
+}

packages/docs/docs/.vuepress/config.js

@@ -143,6 +143,7 @@ function getPluginSidebar (pluginTitle, pluginIntro, officialPluginTitle) {
         'official/plugin-medium-zoom',
         'official/plugin-back-to-top',
         'official/plugin-register-components',
+        'official/plugin-clean-urls'
       ]
     }
   ]

packages/docs/docs/plugin/official/plugin-clean-urls.md

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+---
+title: clean-urls
+metaTitle: A plugin of automatically generating clean urls | VuePress
+---
+
+# [@vuepress/plugin-clean-urls](https://github.com/vuejs/vuepress/tree/master/packages/@vuepress/plugin-clean-urls)
+
+> A plugin of automatically generating clean urls
+
+## Install
+
+```bash
+yarn add -D @vuepress/plugin-clean-urls
+# OR npm install -D @vuepress/plugin-clean-urls
+```
+
+## Usage
+
+```javascript
+module.exports = {
+  plugins: ['@vuepress/clean-urls'] 
+}
+```
+
+## Options
+
+### normalSuffix
+
+- Type: `string`
+- Default: `''`
+
+The suffix for normal pages. For example, `foo/bar.md` will become:
+
+- `foo/bar.html` by default (without this plugin)
+- `foo/bar/` (with `normalSuffix` set to `'/'`)
+- `foo/bar` (with `normalSuffix` set to `''`)
+
+### indexSuffix
+
+- Type: `string`
+- Default: `'/'`
+
+The suffix for index pages. For example, `foo/index.md` will become:
+
+- `foo/` by default (without this plugin)
+- `foo` (with `indexSuffix` set to `''`)
+- `foo/index.html` (with `indexSuffix` set to `'/index.html'`)
+
+::: tip
+An index page is a page with a file name of index.md or readme.md (case insensitive).
+:::

packages/docs/docs/zh/plugin/official/plugin-clean-urls.md

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+---
+title: clean-urls
+metaTitle: 自动生成简洁链接的插件 | VuePress
+---
+
+# [@vuepress/plugin-clean-urls](https://github.com/vuejs/vuepress/tree/master/packages/@vuepress/plugin-clean-urls)
+
+> 自动生成简洁链接的插件
+
+## 安装
+
+```bash
+yarn add -D @vuepress/plugin-clean-urls
+# OR npm install -D @vuepress/plugin-clean-urls
+```
+
+## 使用
+
+```javascript
+module.exports = {
+  plugins: ['@vuepress/clean-urls'] 
+}
+```
+
+## 选项
+
+### normalSuffix
+
+- 类型: `string`
+- 默认值: `''`
+
+普通页面的链接后缀。举个例子，`foo/bar.md` 会自动变成：
+
+- `foo/bar.html` 在默认情况下（未安装本插件时）
+- `foo/bar/`（当 `normalSuffix` 被设为 `'/'` 时）
+- `foo/bar`（当 `normalSuffix` 被设为 `''` 时）
+
+### indexSuffix
+
+- 类型: `string`
+- 默认值: `'/'`
+
+索引页面的链接后缀。举个例子，`foo/index.md` 会自动变成：
+
+- `foo/` 在默认情况下（未安装本插件时）
+- `foo`（当 `indexSuffix` 被设为 `''` 时）
+- `foo/index.html`（当 `indexSuffix` 被设为 `'/index.html'` 时）
+
+::: tip
+索引页面是指文件名为 index.md 或者 readme.md 的页面（不区分大小写）。
+:::