webpack.hot.config.js

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

module.exports = {
    devtool: 'eval',
    entry: [
        'webpack-dev-server/client?http://localhost:3000',
        'webpack/hot/only-dev-server',
        './src/main/js/app/app.js'
    ],
    output: {
        path: __dirname + '/grails-app/assets/javascripts/',
        filename: 'bundle.js',
        publicPath: 'http://localhost:3000/assets/'
    },
    plugins: [
        new webpack.HotModuleReplacementPlugin()
    ],
    module: {
        loaders: [
            {
                test: /\.js$/,
                loaders: ['react-hot', 'babel'],
                include: path.join(__dirname, 'src/main/js')
            },
            {
                test: /\.css$/,
                loaders: ['style', 'css']
            },
            {
                test: /\.(jpe?g|png|gif|svg)$/i,
                loader: 'url?limit=10000&prefix=assets/!img'
            }
        ]
    }
};