feat: refine node api (#1395)

- fix($core): markdown slot doesn‘t work. (regression of c85f62d)
- docs: fresh Node.JS API.
- test: official plugins.

Author: ulivz

babel.config.js

@@ -3,6 +3,9 @@ module.exports = {
     'test': {
       'presets': [
         ['@babel/preset-env', { 'targets': { 'node': 'current' }}]
+      ],
+      'plugins': [
+        '@babel/plugin-syntax-dynamic-import'
       ]
     }
   }

package.json

@@ -13,6 +13,7 @@
     "remote-version": "node scripts/remote-version.js",
     "dev": "yarn tsc && yarn workspace docs dev",
     "build": "yarn tsc && yarn workspace docs build",
+    "view-info": "yarn tsc && yarn workspace docs view-info",
     "show-help": "yarn workspace docs show-help",
     "dev:blog": "yarn tsc && yarn workspace blog dev",
     "build:blog": "yarn tsc && yarn workspace blog build",

packages/@vuepress/core/lib/build.js

@@ -1,8 +1,8 @@
 /* global VUEPRESS_TEMP_PATH */
 
-import Vue from 'vue'
+import GLobalVue from 'vue'
 
-export default function dataMixin (I18n, siteData) {
+export default function dataMixin (I18n, siteData, Vue = GLobalVue) {
   prepare(siteData)
   Vue.$vuepress.$set('siteData', siteData)