bpmn-js-spiffworkflow/webpack.config.js

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

module.exports = {
  entry: {
    bundle: ['./app/app.js']
  },
  output: {
    path: __dirname + '/public',
    filename: 'app.js'
  },
  module: {
    rules: [
      {
        test: /\.m?js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            plugins: [
              [ '@babel/plugin-transform-react-jsx', {
                'importSource': '@bpmn-io/properties-panel/preact',
                'runtime': 'automatic'
              } ]
            ]
          }
        }
      },
      {
        test: /\.bpmn$/,
        use: 'raw-loader'
      }
    ]
  },
  plugins: [
    new CopyWebpackPlugin({
      patterns: [
        { from: 'assets/**', to: 'vendor/bpmn-js', context: 'node_modules/bpmn-js/dist/' },
        {
          from: 'assets/**',
          to: 'vendor/bpmn-js-properties-panel',
          context: 'node_modules/bpmn-js-properties-panel/dist/'
        },
        {from: '**/*.{html,css}', context: 'app/'}
      ]
    })
  ],
  mode: 'development',
  devtool: 'source-map'
};