text: 
  const webpack = require('webpack');
  const nodeExternals = require('webpack-node-externals');
  const StartServerPlugin = require('start-server-webpack-plugin');
  
  module.exports = function(options) {
    return {
      ...options,
      entry: ['webpack/hot/poll?100', options.entry],
      watch: true,
      externals: [
        nodeExternals({
          whitelist: ['webpack/hot/poll?100'],
        }),
      ],
      plugins: [
        ...options.plugins,
        new webpack.HotModuleReplacementPlugin(),
        new webpack.WatchIgnorePlugin([/\.js$/, /\.d\.ts$/]),
        new StartServerPlugin({ name: options.output.filename }),
      ],
    };
  };