为什么vue-cli-3不能构建，“找不到'wepack'"？

Question

因为最近在尝试运行npm run build时收到了这个错误，说在mini-css-extract-plugin中找不到webpack。我不知道是什么原因引起了我的改变。

我最近创建了一个发布分支，但与构建仍然有效的主分支相比，我没有太多的更改(在package.json中)。然而，几周前(在我的假期之前)，它仍然有效，我无法解决这个问题。

另外，这里是初始错误：

Error: Cannot find module 'webpack'
    at Function.Module._resolveFilename (module.js:538:15)
    at Function.Module._load (module.js:468:25)
    at Module.require (module.js:587:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (D:\EnviDat\Frontend\envidat_frontend\node_modules\mini-css-extract-plugin\dist\index.js:8:39)
    at Module._compile (module.js:643:30)
    at Object.Module._extensions..js (module.js:654:10)
    at Module.load (module.js:556:32)
    at tryModuleLoad (module.js:499:12)
    at Function.Module._load (module.js:491:3)
    at Module.require (module.js:587:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (D:\EnviDat\Frontend\envidat_frontend\node_modules\mini-css-extract-plugin\dist\cjs.js:3:18)
    at Module._compile (module.js:643:30)
    at Object.Module._extensions..js (module.js:654:10)
    at Module.load (module.js:556:32)

我已经尝试过通过npm install手动安装node_modules\mini-css-extract-plugin文件夹中的依赖项，但是我得到了其他无法加载的依赖项。在安装它们时。

当我得到以下错误时，我结束了：

Module build failed (from ./node_modules/thread-loader/dist/cjs.js):
Thread Loader (Worker 0)
Failed to load plugin import: Cannot find module 'eslint-plugin-import'
Referenced from: D:\EnviDat\Frontend_develop\envidat_frontend\node_modules\@vue\eslint-config-airbnb\node_modules\eslint-config-airbnb-base\index.js
Referenced from: D:\EnviDat\Frontend_develop\envidat_frontend\node_modules\@vue\eslint-config-airbnb\index.js
Referenced from: D:\EnviDat\Frontend_develop\envidat_frontend\.eslintrc.js
    at PoolWorker.fromErrorObj (D:\EnviDat\Frontend_develop\envidat_frontend\node_modules\thread-loader\dist\WorkerPool.js:262:12)
    at D:\EnviDat\Frontend_develop\envidat_frontend\node_modules\thread-loader\dist\WorkerPool.js:204:29
    at mapSeries (D:\EnviDat\Frontend_develop\envidat_frontend\node_modules\thread-loader\node_modules\neo-async\async.js:3625:14)
    at Function.Module._resolveFilename (module.js:538:15)
    at Function.resolve (internal/module.js:18:19)
    at Plugins.load (D:\EnviDat\Frontend_develop\envidat_frontend\node_modules\eslint\lib\config\plugins.js:104:29)
    at Array.forEach (<anonymous>)
    at Plugins.loadAll (D:\EnviDat\Frontend_develop\envidat_frontend\node_modules\eslint\lib\config\plugins.js:165:21)
    at loadFromDisk (D:\EnviDat\Frontend_develop\envidat_frontend\node_modules\eslint\lib\config\config-file.js:529:35)
    at load (D:\EnviDat\Frontend_develop\envidat_frontend\node_modules\eslint\lib\config\config-file.js:587:20)
    at configExtends.reduceRight (D:\EnviDat\Frontend_develop\envidat_frontend\node_modules\eslint\lib\config\config-file.js:453:36)
    at Array.reduceRight (<anonymous>)
    at applyExtends (D:\EnviDat\Frontend_develop\envidat_frontend\node_modules\eslint\lib\config\config-file.js:431:26)

 @ multi ./src/main.js

在这一点上我迷路了，我可以在网上找到任何东西，所以我重新安装了所有的node_modules，结果仍然是一样的。此外，我还尝试使用npm ci进行全新安装，仍然存在同样的问题。

我不知道为什么会发生这个错误，也不知道要做些什么才能让它再次工作

Package.json中的依赖项：

  "dependencies": {
    "axios": "^0.19.0",
    "babel-polyfill": "^6.26.0",
    "core-js": "^2.6.5",
    "leaflet": "^1.5.1",
    "leaflet.gridlayer.googlemutant": "^0.7.0",
    "m-markdown-preview": "^1.0.0",
    "material-design-icons-iconfont": "*",
    "seedrandom": "^2.4.3",
    "skeleton-placeholder": "^1.0.0",
    "ssri": "^5.3.0",
    "vue": "^2.6.10",
    "vue-infinite-loading": "^2.4.4",
    "vue-router": "^3.0.3",
    "vue2-filters": "^0.7.0",
    "vuetify": "^1.5.5",
    "vuex": "^3.0.1",
    "vuex-localstorage": "^1.0.0"
  },
  "devDependencies": {
    "@mdi/font": "^3.8.95",
    "@storybook/addon-actions": "^4.1.0 || ^5.0.0",
    "@storybook/addon-knobs": "^4.1.0 || ^5.0.0",
    "@storybook/addon-links": "^4.1.0 || ^5.0.0",
    "@storybook/addon-notes": "^4.1.0 || ^5.0.0",
    "@storybook/addon-viewport": "^5.1.9",
    "@vue/cli-plugin-babel": "^3.9.0",
    "@vue/cli-plugin-eslint": "^3.9.2",
    "@vue/cli-service": "^3.9.0",
    "@vue/eslint-config-airbnb": "^4.0.0",
    "babel-eslint": "^10.0.1",
    "css-loader": "^3.1.0",
    "eslint": "^5.16.0",
    "eslint-import-resolver-babel-module": "^5.1.0",
    "eslint-plugin-vue": "^5.0.0",
    "node-sass": "^4.12.0",
    "postcss-import": "^12.0.1",
    "postcss-loader": "^3.0.0",
    "postcss-url": "^8.0.0",
    "sass-loader": "^7.1.0",
    "style-loader": "^0.23.1",
    "stylus": "^0.54.5",
    "stylus-loader": "^3.0.2",
    "vue-cli-plugin-storybook": "^0.6.1",
    "vue-cli-plugin-vuetify": "^0.5.0",
    "vue-template-compiler": "^2.6.10",
    "vuetify-loader": "^1.0.5"
  },

完整的package.json在这里：https://github.com/EnviDat/envidat_frontend/blob/release/Navigation_integration/package.json

和vue.config.js：

module.exports = {
  publicPath: './',
  assetsDir: './static',
  runtimeCompiler: true,
  css: {
    modules: false,
    sourceMap: true,
  },
  pluginOptions: {
    storybook: {
      allowedPlugins: ['define'],
    },
  },
};

我需要如何更改依赖项或配置才能使其再次构建？

Answer 1

所以我删除了package-lock.json，npm告诉我丢失的依赖项。我安装了这些。当我运行构建时，它需要更多关于eslint-loader的dep。

总而言之：

npm install --save-dev webpack html-webpack-plugin typescript vue-loader babel-loader eslint-plugin-import eslint-import-resolver-webpack

和

npm run build

已产生

DONE Build complete. The dist directory is ready to be deployed.

然而，这并没有真正回答到底发生了什么:/

Answer 2

试着跑

npm i -g webpack webpack-cli 

来看看它是否起作用