webpack.config.js

const path = require('path');
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const OptimizeCSSAssetsPlugin = require("optimize-css-assets-webpack-plugin");

const config = {
  entry: './src/quill-emoji.js',
  output: {
    filename: 'quill-emoji.js',
    path: path.resolve(__dirname, 'dist'),
    library: "QuillEmoji",
    libraryTarget: "umd"
  },
  target: "web",
  mode: "production",
  externals: {
    quill: {
      commonjs: 'quill',
      commonjs2: 'quill',
      amd: 'quill',
      root: 'Quill'
    }
  },
  module: {
    rules: [
      {
        test: /\.scss$/,
        use: [
          MiniCssExtractPlugin.loader,
          'css-loader',
          'resolve-url-loader',
          {
            loader: 'sass-loader',
            options: {
              sourceMap: true,
              sourceMapContents: false
            }
          },
        ],
      },
      {
        test: /\.(jpg|png|gif)$/i,
        include: /src/,
        use: [
          {
            loader: 'url-loader',
            options: {
              limit: 8192
            }
          }
        ],
      },
      {
        test: /\.js$/,
        include: [
          path.resolve(__dirname, "src/")
        ],
        exclude: /(node_modules)/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: [['@babel/preset-env', { modules: false }]]
          }
        }
      }
    ]
  },
  optimization: {
    minimizer: [
      new UglifyJsPlugin({
        uglifyOptions: {
          warnings: false,
          compress: {
            conditionals: true,
            unused: true,
            comparisons: true,
            sequences: true,
            dead_code: true,
            evaluate: true,
            join_vars: true,
            if_return: true
          },
          output: {
            comments: false
          }
        }
      }),
      new OptimizeCSSAssetsPlugin({})
    ]
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: 'quill-emoji.css',
      chunkFilename: '[id].css',
    })
  ],
};

module.exports = config;