dev-server.js

const webpack = require('webpack');
const clientConfig = require('./webpack.client.config');


module.exports = function setupDevServer(app) {
  clientConfig.entry.app = [
    'webpack-hot-middleware/client',
    clientConfig.entry.app,
  ];

  clientConfig.plugins.push(
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NoEmitOnErrorsPlugin()
  );

  const clientCompiler = webpack(clientConfig);
  app.use(
    require('webpack-dev-middleware')(clientCompiler, {
      stats: {
        colors: true,
      }
    })
  );

  app.use(require('webpack-hot-middleware')(clientCompiler));
}