小编Dmi*_*min的帖子

将我的 webpack 从 v4 升级到 v5 后，我收到了这个错误，这让我很难调试。

Uncaught TypeError: Cannot read properties of undefined (reading 'default')
    at Module.UserEntity (main.9e5d0727.js:3998)
    at Module.<anonymous> (main.9e5d0727.js:5952)
    at __webpack_require__ (runtime-main.9e5d0727.js:28)
    at fn (runtime-main.9e5d0727.js:308)
    at Module.<anonymous> (main.9e5d0727.js:5645)
    at __webpack_require__ (runtime-main.9e5d0727.js:28)
    at fn (runtime-main.9e5d0727.js:308)
    at Module.<anonymous> (main.9e5d0727.js:4022)
    at __webpack_require__ (runtime-main.9e5d0727.js:28)
    at fn (runtime-main.9e5d0727.js:308)

我比较了 v4 和 v5 webpack 版本之间的“源”选项卡，发现使用此命令生成的文件存在差异cross-env NODE_ENV=local webpack serve --config ./config/webpack.config.js --progress --color

Webpack v4 Webpack v5

这是我当前的webpack.config.js

const path = require('path');
const process = require('process');
const NODE_ENV = process.env.NODE_ENV;

const BundleAnalyzerPlugin …