const webpack = require('webpack'); const config = require('./config'); module.exports = Object.assign(config, { entry: [ 'webpack-hot-middleware/client', './src/main' ], devServer: { port: 3000, progress: true }, devtool: 'cheap-source-maps', plugins: config.plugins.concat([ new webpack.HotModuleReplacementPlugin(), new webpack.NoErrorsPlugin() ]) });