el-beeswarm/webpack.config.dev.cjs

<div style="display: flex; padding: 1rem; flex-direction: column; align-items: center; justify-content: center; height: 100vh; text-align: center; display: flex;

module.exports = {
  entry: './index.js',
  output: {
    path: __dirname + '/dist',
    filename: 'bundle.js',
    libraryTarget: 'var',
    library: 'vis',
    libraryTarget: 'umd',
  },
  module: {
    rules: [
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader'],
      },
      {
        test: /\.js$/,
        loader: 'babel-loader',
        exclude: /node_modules/,
      },
    ],
  },
};