网页套件5、清除Css、清除网页套件插件、

大家好，我创建了一个项目，使用Webpack 5来处理Scss =〉CSS转换以及更多内容。
我已经把所有的东西都修好了除了PurgeCss
当我运行Webpack时，我一直收到错误PurgeCss不是构造函数。
有趣的是，这曾经是工作，但自从我更新了package.json文件，以摆脱漏洞，现在它崩溃。
The full code can be found on the GitHub repo.。
如果有人能告诉我为什么，我将不胜感激，谢谢。

const path = require("path");
// const glob = require("glob");
const _MiniCssExtractPlugin = require("mini-css-extract-plugin");
const _StyleLintPlugin = require("stylelint-webpack-plugin");
const _ESLintPlugin = require("eslint-webpack-plugin");
const { CleanWebpackPlugin } = require("clean-webpack-plugin");
const _CopyPlugin = require("copy-webpack-plugin");
// const { _PurgeCSSPlugin } = require("purgecss-webpack-plugin");

// const PATHS = {
//   src: path.join(__dirname, "../src"),
// };
// const PurgecssPlugin = new _PurgeCSSPlugin({
//   paths: glob.sync(`${PATHS.src}/**/*`),
// });

const MiniCssExtractPlugin = new _MiniCssExtractPlugin({
  filename: "[name].css",
  chunkFilename: "[id].css",
});

const ESLintPlugin = new _ESLintPlugin({
  overrideConfigFile: path.resolve(__dirname, ".eslintrc"),
  context: path.resolve(__dirname, "../src/js"),
  files: "**/*.js",
});

const StyleLintPlugin = new _StyleLintPlugin({
  configFile: path.resolve(__dirname, "stylelint.config.js"),
  //configBasedir: path.resolve(__dirname, "./node_modules/"),
  context: path.resolve(__dirname, "../src/scss"),
  files: "**/*.scss",
  syntax: "scss",
});

/**
 * If getting an error during npm start or watch it's
 * most posable because the src/fonts or src/img folders are empty
 */
const CopyPlugin = new _CopyPlugin({
  patterns: [
    {
      from: path.resolve(__dirname, "../src/img/"),
      to: path.resolve(__dirname, "../../project/public/img/"),
    },
    {
      from: path.resolve(__dirname, "../src/fonts/"),
      to: path.resolve(__dirname, "../../project/public/fonts/"),
    },
    {
      from: path.resolve(__dirname, "../src/index.php"),
      to: path.resolve(__dirname, "../../project/public/index.php"),
    },
  ],
});

module.exports = {
  CleanWebpackPlugin: new CleanWebpackPlugin(),
  MiniCssExtractPlugin: MiniCssExtractPlugin,
  // PurgecssPlugin: PurgecssPlugin,
  ESLintPlugin: ESLintPlugin,
  StyleLintPlugin: StyleLintPlugin,
  CopyPlugin: CopyPlugin,
};