webpack.client.common.js

module.exports = {
  context: `${__dirname}`,
  entry: `./app.jsx`,
  output: {
    path: `${__dirname}/dist`,
    filename: `bundle.js`,
    publicPath: `/`,
  },
  module: {
    rules: [
      {
        test: /.jsx?$/,
        exclude: /node_modules/,
        use: [`babel-loader`, `document-env-vars`],
      },
    ],
  },
};