node-sass 和 sass-loader - 模块构建失败：TypeError: this.getResolve is not a function at Object.loader答案

【问题标题】：node-sass and sass-loader - Module build failed: TypeError: this.getResolve is not a function at Object.loadernode-sass 和 sass-loader - 模块构建失败：TypeError: this.getResolve is not a function at Object.loader
【发布时间】：2020-02-21 02:21:05
【问题描述】：

我只是想按照一个教程来告诉我安装 node-sass 和 sass-loader。当我这样做时，我收到以下错误：

 ERROR  Failed to compile with 1 errors                                                                       6:21:28 PM
 error  in ./src/components/TodoList.vue

Module build failed: TypeError: this.getResolve is not a function
    at Object.loader (C:\xampp\htdocs\projects\todo-vue\node_modules\sass-loader\dist\index.js:52:26)

 @ ./node_modules/vue-style-loader!./node_modules/css-loader/dist/cjs.js?{"sourceMap":true}!./node_modules/vue-loader/lib/style-compiler?{"vue":true,"id":"data-v-3de47834","scoped":false,"hasInlineConfig":false}!./node_modules/sass-loader/dist/cjs.js?{"sourceMap":true}!./node_modules/vue-loader/lib/selector.js?type=styles&index=0!./src/components/TodoList.vue 4:14-377 13:3-17:5 14:22-385
 @ ./src/components/TodoList.vue
 @ ./node_modules/babel-loader/lib!./node_modules/vue-loader/lib/selector.js?type=script&index=0!./src/App.vue
 @ ./src/App.vue
 @ ./src/main.js
 @ multi (webpack)-dev-server/client?http://localhost:8080 webpack/hot/dev-server ./src/main.js

我的 package.json 文件

{
  "name": "todo-vue",
  "version": "1.0.0",
  "description": "A Vue.js project",
  "author": "Jethro Hazelhurst <j.hazelhurst1994@gmail.com>",
  "private": true,
  "scripts": {
    "dev": "webpack-dev-server --inline --progress --config build/webpack.dev.conf.js",
    "start": "npm run dev",
    "build": "node build/build.js"
  },
  "dependencies": {
    "node-sass": "^4.13.0",
    "sass-loader": "^8.0.0",
    "vue": "^2.5.2"
  },
  "devDependencies": {
    "autoprefixer": "^7.1.2",
    "babel-core": "^6.22.1",
    "babel-helper-vue-jsx-merge-props": "^2.0.3",
    "babel-loader": "^7.1.1",
    "babel-plugin-syntax-jsx": "^6.18.0",
    "babel-plugin-transform-runtime": "^6.22.0",
    "babel-plugin-transform-vue-jsx": "^3.5.0",
    "babel-preset-env": "^1.3.2",
    "babel-preset-stage-2": "^6.22.0",
    "chalk": "^2.0.1",
    "copy-webpack-plugin": "^4.0.1",
    "css-loader": "^3.2.0",
    "extract-text-webpack-plugin": "^3.0.0",
    "file-loader": "^1.1.4",
    "friendly-errors-webpack-plugin": "^1.6.1",
    "html-webpack-plugin": "^2.30.1",
    "node-notifier": "^5.1.2",
    "optimize-css-assets-webpack-plugin": "^3.2.0",
    "ora": "^1.2.0",
    "portfinder": "^1.0.13",
    "postcss-import": "^11.0.0",
    "postcss-loader": "^2.0.8",
    "postcss-url": "^7.2.1",
    "rimraf": "^2.6.0",
    "semver": "^5.3.0",
    "shelljs": "^0.7.6",
    "uglifyjs-webpack-plugin": "^1.1.1",
    "url-loader": "^2.2.0",
    "vue-loader": "^13.3.0",
    "vue-style-loader": "^3.0.1",
    "vue-template-compiler": "^2.5.2",
    "webpack": "^3.12.0",
    "webpack-bundle-analyzer": "^3.6.0",
    "webpack-dev-server": "^2.9.1",
    "webpack-merge": "^4.1.0"
  },
  "engines": {
    "node": ">= 6.0.0",
    "npm": ">= 3.0.0"
  },
  "browserslist": [
    "> 1%",
    "last 2 versions",
    "not ie <= 8"
  ]
}

我设置<style lang="scss">的Vue文件

<template>
    <div>
        <input type="text" class="todo-input" placeholder="What needs to be done">
        Todo list goes here
    </div>
</template>

<script>
export default {
  name: 'todo-list',
  data () {
    return {
      msg: 'Welcome to Your Vue.js App'
    }
  }
}
</script>

<style lang="scss">

</style>

不知道我哪里错了。

【问题讨论】：

你有没有想过这个问题？尝试在 Vue 单文件组件中使用 SCSS (<style lang="scss">) 而不是手写笔 (<style lang="stylus">) 后遇到同样的问题。

标签： vue.js npm node-sass sass-loader

【解决方案1】：

您有"webpack": "^3.12.0" 和"sass-loader": "^8.0.0"，我认为它们不兼容（如this Github issue 中所述）。

要解决此问题，请将webpack 升级到版本4 或将sass-loader 降级到版本7（我个人就是这样做的）。

【讨论】：

【解决方案2】：

从 sass-loader 8.0.0 降级到 7.3.1 为我在 Webpack 4.4.0 的新构建中修复了它。

资源：

Github 问题跟踪器：https://github.com/webpack-contrib/sass-loader/issues/761

Github 解决方案：https://github.com/webpack-contrib/sass-loader/issues/761#issuecomment-554608680

【讨论】：

【解决方案3】：

这里有新鱼，做同样的教程！

在“npm run dev”之后的开头，有类似的警告 sass-loader@^x.x.x 找到但 y.y.y 预期。 webpack@^x.x.x 已找到，但应为 y.y.y。

对于那些搜索 npm 降级命令的人：

卸载例如

npm 卸载 sass-loader

安装预期版本（将 y.y.y 更改为预期版本）

npm install sass-loader@^y.y.y --save-dev

我在我的项目根文件夹中运行了这个，然后教程开始工作了（但是，在 localhost:3000/todo 下）

【讨论】：