can i just change my webpack mode to production code example

Example 1: running webpack application on production server

"scripts": {
    "build": "NODE_ENV=production webpack --config ./webpack.production.config.js"
},

Example 2: running webpack application on production server

new webpack.optimize.CommonsChunkPlugin('common.js'),
  new webpack.optimize.DedupePlugin(),
  new webpack.optimize.UglifyJsPlugin(),
  new webpack.optimize.AggressiveMergingPlugin()