webpack.config.js

const path = require('path');
const TerserPlugin = require('terser-webpack-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');

module.exports = [{
  entry: {
    'quill.imageUploader': './src/quill.imageUploader.js',
    demo: './src/demo.js',
  },
  output: {
    filename: '[name].min.js',
    path: path.resolve(__dirname, 'dist'),
  },
  devServer: {
    // contentBase: './src',
    https: true,
  },
  externals: {
    quill: 'Quill',
  },
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        extractComments: true,
        cache: true,
        parallel: true,
        sourceMap: true, // Must be set to true if using source-maps in production
        terserOptions: {
          // https://github.com/webpack-contrib/terser-webpack-plugin#terseroptions
          extractComments: 'all',
          compress: {
            drop_console: false,
          },
        },
      }),
    ],
  },
  module: {
    rules: [{
      test: /\.css$/,
      use: ExtractTextPlugin.extract({
        use: [{
          loader: 'css-loader',
        }],
      }),
    },
    {
      test: /\.js$/,
      exclude: /node_modules/,
      use: {
        loader: 'babel-loader',
      },
    },
    ],
  },
  plugins: [new ExtractTextPlugin('quill.imageUploader.min.css')],
}];