const path = require('path');
// const CopyWebpackPlugin = require('copy-webpack-plugin'); // 最新版本copy-webpack-plugin插件暂不兼容，推荐v5.0.0
const CompressionWebpackPlugin = require('compression-webpack-plugin');
const productionGzipExtensions = /\.(js|css|json|txt|html|ico|svg|ttf|woff|woff2)(\?.*)?$/i;
const isPro = process.env.NODE_ENV === 'production';

module.exports = {
  lintOnSave: process.env.NODE_ENV !== 'production',
  productionSourceMap: false,
  devServer: {
    // open: true,
    // host: '127.0.0.1',
    overlay: { warnings: false, errors: true },
    // proxy: {}
  },
  configureWebpack: {
    plugins: isPro
      ? [
          new CompressionWebpackPlugin({
            filename: '[path].gz[query]',
            algorithm: 'gzip',
            test: productionGzipExtensions,
            threshold: 10240,
            minRatio: 0.8,
            deleteOriginalAssets: false,
          }),
        ]
      : [],
  },
  pluginOptions: {
    // mock: { entry: './src/mock/mock.js', debug: true, disable: true },
    // webpackBundleAnalyzer: {
    //   openAnalyzer: isPro,
    // },
  },
};