webpack.config.js

const path = require('path');
const {CleanWebpackPlugin} = require('clean-webpack-plugin');
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');

module.exports = {
  mode: 'production',
  devtool: 'source-map',
  entry: {
    app: './src/app.js',
  },
  stats: {
    colors: true,
  },
  plugins: [
    new CleanWebpackPlugin(),
  ],
  optimization: {
    minimizer: [new UglifyJsPlugin()],
  },
  output: {
    filename: '[name].bundle.js',
    path: path.resolve(__dirname, 'dist'),
  },
  module: {
    rules: [
      {
        test: /\.m?js$/,
        exclude: /(node_modules|bower_components)/,
        use: {
          loader: 'babel-loader',
          options: {presets: ['@babel/preset-env']},
        },
      },
      {
        parser: {
          amd: false,
        },
      },
    ],
  },
};