webpack.config 中使用 exclude 排除掉node_modules

 {
                test: /\.jsx$/,
                exclude: /node_modules/,
                loader: "babel",
                query: {
                presets: ['es2015', 'react', 'stage-0']
            }
            },
            {

                test: /\.js$/,
                exclude: /node_modules/, 
                loader: "babel",
                query: {
                presets: ['es2015', 'stage-0']
            }