feat($core): plugin option - chainMarkdown

Author: ulivz

packages/@vuepress/core/lib/markdown/index.js

@@ -24,9 +24,7 @@ const { parseHeaders } = require('@vuepress/shared-utils')
  * Create markdown by config.
  */
 
-module.exports = ({
-  markdown = {}
-} = {}) => {
+module.exports = (markdown = {}, pluginAPI) => {
   // allow user config slugify
   const slugify = markdown.slugify || _slugify
   // using chainedAPI
@@ -96,6 +94,8 @@ module.exports = ({
         .use(lineNumbers)
   }
 
+  pluginAPI.options.chainMarkdown.syncApply(config)
+
   if (markdown.chainMarkdown) {
     markdown.chainMarkdown(config)
   }

packages/@vuepress/core/lib/plugin-api/constants.js

@@ -13,6 +13,7 @@ const PLUGIN_OPTION_META_MAP = {
   OUT_FILES: { name: 'outFiles', types: [Object] },
   EXTEND_PAGE_DATA: { name: 'extendPageData', types: [Function] },
   EXTEND_MARKDOWN: { name: 'extendMarkdown', types: [Function] },
+  CHAIN_MARKDOWN: { name: 'chainMarkdown', types: [Function] },
   CLIENT_DYNAMIC_MODULES: { name: 'clientDynamicModules', types: [Function] },
   CLIENT_ROOT_MIXIN: { name: 'clientRootMixin', types: [String] },
   ADDITIONAL_PAGES: { name: 'additionalPages', types: [Function, Array] },

packages/@vuepress/core/lib/plugin-api/index.js

@@ -165,6 +165,7 @@ module.exports = class PluginAPI {
     chainWebpack,
     enhanceDevServer,
     extendMarkdown,
+    chainMarkdown,
     enhanceAppFiles,
     outFiles,
     extendPageData,
@@ -190,6 +191,7 @@ module.exports = class PluginAPI {
       .registerOption(PLUGIN_OPTION_MAP.CHAIN_WEBPACK.key, chainWebpack, pluginName)
       .registerOption(PLUGIN_OPTION_MAP.ENHANCE_DEV_SERVER.key, enhanceDevServer, pluginName)
       .registerOption(PLUGIN_OPTION_MAP.EXTEND_MARKDOWN.key, extendMarkdown, pluginName)
+      .registerOption(PLUGIN_OPTION_MAP.CHAIN_MARKDOWN.key, chainMarkdown, pluginName)
       .registerOption(PLUGIN_OPTION_MAP.EXTEND_PAGE_DATA.key, extendPageData, pluginName)
       .registerOption(PLUGIN_OPTION_MAP.ENHANCE_APP_FILES.key, enhanceAppFiles, pluginName)
       .registerOption(PLUGIN_OPTION_MAP.OUT_FILES.key, outFiles, pluginName)

packages/@vuepress/core/lib/prepare/AppContext.js

@@ -66,10 +66,10 @@ module.exports = class AppContext {
 
   async process () {
     this.normalizeHeadTagUrls()
-    this.markdown = createMarkdown(this.siteConfig)
     this.resolveTemplates()
     await this.resolveTheme()
     this.resolvePlugins()
+    this.markdown = createMarkdown(this.siteConfig.markdown, this.pluginAPI)
 
     await this.resolvePages()
     await Promise.all(