尝试在 Node.js 上运行项目时出错答案

【问题标题】：Error while trying to run a project on Node.js尝试在 Node.js 上运行项目时出错
【发布时间】：2020-09-16 10:22:47
【问题描述】：

我只是一个初学者，在启动项目的前端时遇到了问题。

当我运行以下命令时：

npm run dev

我收到以下错误：

> cross-env NODE_ENV=development webpack-dev-server --mode=development --progress --port 8081 --open

module.js:550
   throw err;
   ^

Error: Cannot find module 'vue-loader/lib/plugin'
...

完整的错误显示在this screenshot

package.json：

{
  "name": "absolutum",
  "description": "My webpack project",
  "version": "1.0.0",
  "author": "Roman Tayursky <tayursky@gmail.com>",
  "license": "MIT",
  "private": true,
  "scripts": {
    "dev": "cross-env NODE_ENV=development webpack-dev-server --mode=development --progress --port 8081 --open",
    "build": "webpack --mode=production -p --progress",
    "start": "webpack-dev-server"
  },
  "dependencies": {
    "@babel/polyfill": "~7.2",
    "fs": "0.0.1-security",
    "mango-dct": "^1.1.1",
    "mini-css-extract-plugin": "^0.7.0",
    "optimize-css-assets-webpack-plugin": "^5.0.3",
    "postcss-loader": "^3.0.0",
    "prettier": "^1.18.2",
    "style-loader": "^0.23.1",
    "stylus": "^0.54.5",
    "stylus-loader": "^3.0.2",
    "vue-drag-drop": "^1.1.4",
    "vue-input-mask": "0.0.11",
    "vue-masked-input": "^0.5.2",
    "vue-moment": "^4.0.0",
    "vuex": "^3.1.1",
    "webpack-merge": "^4.2.1",
    "webpack-sources": "^1.3.0"
  },
  "browserslist": [
    "> 1%",
    "last 2 versions",
    "not ie <= 8"
  ],
  "devDependencies": {
    "@babel/core": "~7.2",
    "@babel/plugin-proposal-class-properties": "~7.3",
    "@babel/plugin-proposal-decorators": "~7.3",
    "@babel/plugin-proposal-json-strings": "~7.2",
    "@babel/plugin-syntax-dynamic-import": "~7.2",
    "@babel/plugin-syntax-import-meta": "~7.2",
    "@babel/preset-env": "~7.3",
    "babel-loader": "^8.0",
    "compression-webpack-plugin": "^2.0.0",
    "cross-env": "^5.0.5",
    "css-loader": "^1.0.1",
    "element-ui": "^2.10.0",
    "friendly-errors-webpack-plugin": "~1.7",
    "html-webpack-plugin": "^3.2.0",
    "node-sass": "^4.5.3",
    "sass-loader": "^7.1.0",
    "uglifyjs-webpack-plugin": "^1.3.0",
    "vue": "^2.6.10",
    "vue-axios": "^2.1.4",
    "vue-cli": "^2.9.6",
    "vue-loader": "^14.2.2",
    "vue-router": "^3.0.6",
    "vue-style-loader": "^4.1.2",
    "vue-template-compiler": "^2.6",
    "webpack": "^4.35.2",
    "webpack-bundle-analyzer": "^3.3.2",
    "webpack-cli": "^3.3.5",
    "webpack-dev-server": "^3.7.2",
    "webpack-serve": "^3.1.0"
  }
}

请帮帮我。

【问题讨论】：

尝试运行npm i然后再次运行项目
我已经做了 npm i, + 给这个项目的开发者写信了，但是他不知道如何帮助我启动它。

标签： node.js npm webpack

【解决方案1】：

您似乎刚刚下载了项目并尝试运行，

在运行之前，你需要安装项目的 package.json 中列出的依赖项

安装使用（确保您位于根路径，即您的 package.json 所在的位置）

npm install

然后运行

【讨论】：

嗨 r7r，我按顺序执行了 npm i，然后 npm run dev，尝试删除 node_modules，但没有帮助（我写信给这个项目的开发人员，但他没有不知道如何帮助我，所以我在 Stackoverflow 上

【解决方案2】：

如果有人有用，那么我在 package.json 中删除/注释掉 vue-loader 并通过 npm i vue-loader 手动安装。就我而言，我还需要安装 axios。谢谢:)

【讨论】：