Question

我让 npm run 在 vue js 上构建了这样一个请求。但答案是这样的：你可以提供帮助。但我想部署项目时出现当前错误。我有一个正在运行的 npm run 服务器。

✔  Building for production...
 ERROR  TypeError: Class extends value undefined is not a constructor or null
TypeError: Class extends value undefined is not a constructor or null
    at Object.<anonymous> (C:\django 5\Новая папка (34)\Новая папка (29)\Новая папка (23) full\vuedjangorest\node_modules\mini-css-extract-plugin\dist\CssDependency.js:12:46)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
    at Module.load (internal/modules/cjs/loader.js:928:32)
    at Function.Module._load (internal/modules/cjs/loader.js:769:14)
    at Module.require (internal/modules/cjs/loader.js:952:19)
    at require (internal/modules/cjs/helpers.js:88:18)
    at Object.<anonymous> (C:\django 5\Новая папка (34)\Новая папка (29)\Новая папка (23) full\vuedjangorest\node_modules\mini-css-extract-plugin\dist\index.js:12:45)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
    at Module.load (internal/modules/cjs/loader.js:928:32)
    at Function.Module._load (internal/modules/cjs/loader.js:769:14)
    at Module.require (internal/modules/cjs/loader.js:952:19)
    at require (internal/modules/cjs/helpers.js:88:18)
    at Object.<anonymous> (C:\django 5\Новая папка (34)\Новая папка (29)\Новая папка (23) full\vuedjangorest\node_modules\mini-css-extract-plugin\dist\cjs.js:3:18)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! vuedjangorest@0.1.0 build: `vue-cli-service build`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the vuedjangorest@0.1.0 build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Toma\AppData\Roaming\npm-cache\_logs\2021-02-15T23_16_59_526Z-debug.log

我的 index.html 看起来像这样

<!DOCTYPE html>
<html lang="en">
  <head>
    




    <script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width,initial-scale=1.0">
    <link rel="icon" href="<%= BASE_URL %>favicon.ico">
    <title><%= htmlWebpackPlugin.options.title %></title>
    <link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
    <link href="https://fonts.googleapis.com/css?family=Lora|Open+Sans|Roboto" rel="stylesheet">
    <link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous">
    <link href="https://fonts.googleapis.com/css?family=Lora|Open+Sans|Roboto" rel="stylesheet">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css" />
    <link rel="stylesheet" href="https://bootstraptema.ru/plugins/2016/animate/animate.css" />
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script>
    <link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
    <script src="https://cdnjs.cloudflare.com/ajax/libs/vue-clickaway/2.2.1/vue-clickaway.min.js" integrity="sha512-sOXxDTpOJUOo/TDLL091b1vj4vxZEGVJVImZ/YFGccdhtI9tkXfnuBv9VEQG+MnZ7tt3R+h6r7yZH9APkBD+kg==" crossorigin="anonymous"></script>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
    <script src="//unpkg.com/vue/dist/vue.js"></script>
    <script src="//unpkg.com/element-ui@2.0.11/lib/index.js"></script>
    <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
    <script src="https://use.fontawesome.com/76a01e3e01.js"></script>
    <script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/2.5.4/umd/popper.min.js" integrity="sha512-7yA/d79yIhHPvcrSiB8S/7TyX0OxlccU8F/kuB8mHYjLlF1MInPbEohpoqfz0AILoq5hoD7lELZAYYHbyeEjag==" crossorigin="anonymous"></script>
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous">
  </head>
  <body style="background: #f4f4f4;">
    
    <div id="app"></div>

  </body>
 
</html>

Answer 1

安装最新的 webpack npm i webpack -g

此外，本地 npm i webpack --save

最后安装 npm install --save webpack-dev-server 用于本地安装。

我遇到了同样的问题并且为我工作。

错误类型错误：类扩展值未定义不是构造函数或 null.Vue.js

1 个答案: