webpack.common.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');

module.exports = {
  entry: './src/index.js',
  output: {
    filename: 'index.js',
    path: path.resolve(__dirname, 'dist'),
    clean: true,
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: './index.html',
      filename: 'index.html',
      favicon: './public/favicon.png',
      inject: false,
    }),
    new MiniCssExtractPlugin({
      filename: 'style.css',
    }),
  ],
  module: {
    rules: [
      {
        test: /\.css$/i,
        use: [MiniCssExtractPlugin.loader, 'css-loader'],
      },
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: 'babel-loader',
      },
    ],
  },
};