如何在Vaadin应用程序中配置webpack.config.js？从node_modules导入CSS / PNG (Leaflet库)

const CopyWebpackPlugin = require('copy-webpack-plugin');

module.exports = {
  plugins: [
    new CopyWebpackPlugin({
      patterns: [
        { from: 'node_modules/leaflet/dist/images', to: 'images' },
        { from: 'node_modules/leaflet/dist/leaflet.css', to: 'leaflet.css' }
      ]
    })
  ]
};

"scripts": {
  "build": "webpack --mode production",
  "start": "webpack-dev-server --mode development --inline --hot"
}

import com.vaadin.flow.component.dependency.CssImport;
import com.vaadin.flow.component.html.Div;

@CssImport(value = "./leaflet.css", themeFor = "vaadin-leaflet-default-theme")
public class LeafletMap extends Div {
  // ...
}

npm run build

npm start