Webpack根据webpack.config.js中的生产模式优化和压缩CSS和Javascript。

Question

我在package.json中具有以下NPM脚本：

"scripts": {
    "start": "cross-env NODE_ENV=development webpack --mode development",
    "build": "cross-env NODE_ENV=production webpack --mode production"
  },

如果我运行npm run build（
生产

模式），我想添加optimization（请参见下文）以压缩CSS并Uglify Javascript。我该如何实现？优化：{最小化器：[新的TerserJSPlugin（{}），新的OptimizeCSSAssetsPlugin（{}）]，}，

如果我运行npm start，我想watch这些文件，并且除了optimization外，其他与生产模式相同。我正在构建一个Drupal站点，因此我也需要在开发中构建资产。

我的webpack.config.js现在看起来像这样：

const path = require('path');
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const CopyPlugin = require('copy-webpack-plugin');
const OptimizeCssAssetsPlugin = require('optimize-css-assets-webpack-plugin');
const TerserPlugin = require('terser-webpack-plugin');
const webpack = require('webpack');
const autoprefixer = require('autoprefixer');

const config = {
  entry: {
    main: "./src/index.js",
    courses: "./src/courses.js",
    vendor: "./src/vendor.js"
  },
  output: {
    filename: '[name].bundle.js',
    path: path.resolve(__dirname, 'dist')
  },
  plugins: [
    new MiniCssExtractPlugin({ filename: '[name].css' }),
    new CopyPlugin([
      { from: './src/assets/images', to: 'assets/images' },
      { from: './src/assets/icons', to: 'assets/icons' }
    ]),
  ],
  module: {
    rules: [
      {
        test: /\.css$/,
        use: [
          MiniCssExtractPlugin.loader,
          { loader: 'css-loader', options: { importLoaders: 1 } },
          'postcss-loader',
        ]
      },
      {
        test: /\.(woff(2)?|ttf|eot|svg)(\?v=\d+\.\d+\.\d+)?$/,
        use: {
          loader: 'file-loader',
          options: {
            name: '[name].[ext]',
            outputPath: './assets/fonts',
          },
        },
      }
    ]
  }
};

module.exports = (env, argv) => {

  if (argv.mode === 'development') {
    //...
  }

  if (argv.mode === 'production') {
    //...
  }

  return config;
};

我如何构建它？

我在package.json中有以下NPM脚本：“ scripts”：{“ start”：“ cross-env NODE_ENV = development webpack --mode development”，“ build”：“ cross-env NODE_ENV = production webpack-模式...

Answer 1

我通过如下调整webpack.config.js来解决它：