Merge pull request #1771 from sodatea/do-not-transpile-core-js

fix($core): do not transpile core packages' dependencies

fix #1753
fix #4539
fix #1729

packages/@vuepress/core/lib/node/webpack/createBaseConfig.js

@@ -145,7 +145,7 @@ module.exports = function createBaseConfig (context, isServer) {
             return false
           }
           // transpile all core files
-          if (/(@vuepress|vuepress-)\/.*\.js$/.test(filePath)) {
+          if (/(@vuepress|vuepress-)\/^((?!node_modules).)*\.js$/.test(filePath)) {
             return false
           }
           // Don't transpile node_modules