webpack.prod.config.js

const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const merge = require('webpack-merge');
const webpackBaseConfig = require('./webpack.base.config.js');
const fs = require('fs');

fs.open('./src/config/env.js', 'w', function(err, fd) {
    const buf = 'export default "production";';
    fs.write(fd, buf, function(err, written, buffer) {});
});

module.exports = merge(webpackBaseConfig, {
    mode: 'production',
    output: {
        publicPath: '/dist/',
        filename: '[name].[hash].js',
        chunkFilename: '[name].[hash].chunk.js'
    },
    plugins: [
        new webpack.DefinePlugin({
            'process.env': {
                NODE_ENV: '"production"'
            }
        }),
/*         new webpack.optimize.UglifyJsPlugin({
            compress: {
                warnings: false
            }
        }), */
        new HtmlWebpackPlugin({
            filename: '../index_prod.html',
            template: './src/template/index.ejs',
            inject: false
        }),
    ],
    optimization: {
        splitChunks: {
            cacheGroups: {
                commons: {
                    name: "commons",
                    chunks: "initial",
                    minChunks: 2
                }
            }
        }
    },
});