var webpack = require('webpack'); module.exports = { mode: 'development', entry: './client/index.js', watch: true, devtool: 'cheap-source-map', output: { filename: './bundle.js' }, module: { rules: [ { test: /\.jsx?$/, exclude: /(node_modules|bower_components)/, use: { loader: 'babel-loader', options: { presets: ['env'] } } } ] }, }