Core-JS 3 Babel results in mini-css-extract-plugin error

Question

Following on from this question I have set up my Webpack 4 config to handle babel-loader like this

{
  module : {
    rules : [{
      test : /\         


        

Answer 1

I had a similar problem and the reason was that Babel was transpiling my css-loader webpack plugin. Look here: MiniCssExtractPlugin error on entry point build