text: const merge = require('webpack-merge');
  const common = require('./webpack.common.js');
  const {
    CleanWebpackPlugin
  } = require('clean-webpack-plugin');
  
  module.exports = merge(common, {
    mode: 'production',
    devtool: 'source-map',
    plugins: [
      new CleanWebpackPlugin(),
    ]
  });
  