小编Aye*_*Aye的帖子

我遵循了设置 webpack 和 babel 的所有说明。我使用 npm install --save-dev webpack webpack-dev-server @babel/core babel-loader @babel/preset-env @babel/polyfill 安装了依赖项。我还安装了 webpack-cli。这是我的 package.json 文件中的内容：

{
  "name": "webpack_babel_prac",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "wepack-dev-server --mode development --open",
    "build": "webpack"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "@babel/core": "^7.12.3",
    "@babel/polyfill": "^7.12.1",
    "@babel/preset-env": "^7.12.1",
    "babel-loader": "^8.1.0",
    "webpack": "^5.3.0",
    "webpack-cli": "^4.1.0",
    "webpack-dev-server": "^3.11.0"
  }
}

以下代码是我在 webpack.config.js 文件中的代码

    const path = require('path');

    module.exports = {
      entry: { …