simplist webpack buildjs

build.js

var webpack = require('webpack');

const webpackConfig = {
  entry: './app.js',
  output: {
    filename: 'bundle.js',
    path: './'
  },
  module: {
    rules: [

    ]
  },
  plugins: [
    // new webpack.optimize.UglifyJsPlugin({
    //   compress: {
    //     warnings: false
    //   }
    // })
  ]
}

webpack(webpackConfig, function (err, stats) {
  if (err) throw err
  process.stdout.write(stats.toString({
    colors: true,
    modules: false,
    children: false,
    chunks: false,
    chunkModules: false
  }) + '\n')
});