basic-webpack.config.js

var path = require('path');
var webpack = require('webpack');

var BUILD_DIR = path.resolve(__dirname, 'src/client/public');
var APP_DIR = path.resolve(__dirname, 'src/client/app');

config = {
  entry: APP_DIR + '/index.jsx',
  output: {
    path: BUILD_DIR,
    publicPath: 'public', //relative to devSever.contentBase
    filename: 'bundle.js' },
  // devtool: 'source-map',
  devServer: {
    contentBase: "./src/client"
  },
  module: {
    rules: [
  	{
        test: /.jsx?$/,
        loader: 'babel-loader',
  	}
	]
  },
}

module.exports = config;