/* eslint-disable import/no-extraneous-dependencies */
/* eslint-disable prefer-template */
const { merge } = require('webpack-merge');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const CssMinimizerPlugin = require('css-minimizer-webpack-plugin');
const TerserPlugin = require('terser-webpack-plugin');
const CompressionPlugin = require('compression-webpack-plugin');
const path = require('path');
const paths = require('./paths');
const common = require('./webpack.common');

module.exports = merge(common, {
  mode: 'production',
  devtool: false,
  output: {
    path: paths.build,
    publicPath: '/',
    filename: 'js/[name].[contenthash].bundle.js',
  },
  plugins: [
    // new BundleAnalyzerPlugin(),
    new MiniCssExtractPlugin({
      filename: 'styles/[name].[contenthash].css',
      chunkFilename: '[contenthash].css',
    }),
    new CompressionPlugin({
      filename: '[path]/[name].gz[query]',
      algorithm: 'gzip',
      test: /\.js$|\.css$|\.html$|\.eot?.+$|\.ttf?.+$|\.woff?.+$|\.svg?.+$/,
      threshold: 10240,
      minRatio: 0.8,
    }),
  ],
  module: {
    rules: [],
  },
  optimization: {
    minimize: true,
    minimizer: [
      '...',
      new TerserPlugin({
        terserOptions: {
          warnings: false,
          compress: {
            comparisons: false,
          },
          parse: {},
          mangle: true,
          output: {
            ascii_only: true,
          },
        },
        parallel: true,
      }),
      new CssMinimizerPlugin(),
    ],
    nodeEnv: 'production',
    sideEffects: true,
    runtimeChunk: 'single',
    splitChunks: {
      chunks: 'all',
      maxInitialRequests: 10,
      minSize: 0,
      cacheGroups: {
        vendor: {
          test: /[\\/]node_modules[\\/]/,
          name(module) {
            const packageName = module.context.match(/[\\/]node_modules[\\/](.*?)([\\/]|$)/)[1];
            return `npm.${packageName.replace('@', '')}`;
          },
        },
      },
    },
  },
  resolve: {
    modules: [],
    alias: {
      graphlib: path.resolve(__dirname, '../', 'node_modules', 'graphlib'),
    },
  },
  performance: {
    hints: false,
    maxEntrypointSize: 512000,
    maxAssetSize: 512000,
  },
});