Vuepress Bug Reproduction

This is a minimal set of the dependencies to reproduce this bug

I believe it's caused by the babel configuration file in the root dir

Remove the configuration file, no error appears

Development

install dependencies

yarn

# or

npm install

Run vuepress serve

npm run doc

# or

yarn doc

Other Information

upgrade to latest @babel/core and babel-loader seems to solve this problem

try cd node_modules/vuepress and yarn && yarn add @babel/core@latest babel-loader@latest to check the result