webpack.prod.js

const merge = require('webpack-merge');
const common = require('./webpack.common.js');
const UglifyJSPlugin = require('uglifyjs-webpack-plugin');

module.exports = merge(common, {
    mode: 'production',
    optimization: {
        minimizer: [
            new UglifyJSPlugin({
                sourceMap: true,
                uglifyOptions: {
                    compress: {
                        inline: false
                    }
                }
            })
        ],
        runtimeChunk: false,
        splitChunks: {
            cacheGroups: {
                default: false,
                commons: {
                    test: /[\\/]node_modules[\\/]/,
                    name: 'vendor_app',
                    chunks: 'all',
                    minChunks: 2
                }
            }
        }
    }
});