webpack react hi

package.json

{
  "scripts": {
    "dev": "webpack-dev-server --inline --hot"
  }
}

webpack.config.js

var webpack = require('webpack')

module.exports = {
    entry: './app/index',
    output: {
        path: __dirname + '/public',
        filename: 'bundle.js'
    },
    plugins: [
        new webpack.IgnorePlugin(/^\.\/locale$/, /mo,ment$/),
        new webpack.HotModuleReplacementPlugin(),
        new webpack.NoErrorsPlugin()
    ],
    module: {
        loaders: [
            { test: /\.js$/, exclude: /node_modules/, loaders: ['react-hot', 'babel-loader'] },
            { test: /\.jsx$/, loaders: ['react-hot', 'babel-loader'] }
        ]
    },
    //externals: {
    //    'react': 'React'
    //},
    devServer: {
        contentBase: './public'
    },
    devtool: 'source-map'
}