Preset files are not allowed to export objects

Question

I have a carousel file in which I want to get index.js and build block.build.js, so my webpack.config.js is:

Answer 1

It happened to me and a simple solution for me was to uninstall babel-loader@8^ and @babel/core:

npm uninstall --save babel-loader
npm uninstall --save @babel/core

… and then to install version 7 babel-loader:

npm install --save-dev babel-loader@^7