如何在 Nuxt 中设置 SASS/SCSS/sass-loader

Question

我有一个 Nuxt 应用，我想使用 CSS 预处理器。
我安装了sass-loaderfibers依赖项，但是安装后，应用程序控制台中会出现一条消息，我在图像和代码中呈现了该消息

这是代码错误：

 WARN  webpack@5.49.0 is installed but ^4.46.0 is expected                                                                                                                                                                     17:22:44


 WARN  sass-loader@12.1.0 is installed but ^10.1.1 is expected

     


Rule can only have one resource source (provided resource and test + include + exclude) in {                                                                                                                           17:22:46
  "use": [
    {
      "loader": "/home/sergey/all_project/pro_projects_all_language/empty/node_modules/babel-loader/lib/index.js",
      "options": {
        "configFile": false,
        "babelrc": false,
        "cacheDirectory": true,
        "envName": "server",
        "presets": [
          [
            "/home/sergey/all_project/pro_projects_all_language/empty/node_modules/@nuxt/babel-preset-app/src/index.js",
            {
              "corejs": {
                "version": 3
              }
            }
          ]
        ]
      },
      "ident": "clonedRuleSet-29[0].rules[0].use[0]"
    }
  ]
}

  "use": [
  {
  "loader": "node_modules/babel-loader/lib/index.js",
  "options": {
  "configFile": false,
  "babelrc": false,
  "cacheDirectory": true,
  "envName": "server",
  "presets": [
  [
  "node_modules/@nuxt/babel-preset-app/src/index.js",
  {
  "corejs": {
  "version": 3
  }
  }
  ]
  ]
  },
  "ident": "clonedRuleSet-29[0].rules[0].use[0]"
  }
  ]
  }
  at checkResourceSource (node_modules/@nuxt/webpack/node_modules/webpack/lib/RuleSet.js:167:11)
  at Function.normalizeRule (node_modules/@nuxt/webpack/node_modules/webpack/lib/RuleSet.js:198:4)
  at node_modules/@nuxt/webpack/node_modules/webpack/lib/RuleSet.js:110:20
  at Array.map (<anonymous>)
  at Function.normalizeRules (node_modules/@nuxt/webpack/node_modules/webpack/lib/RuleSet.js:109:17)
  at new RuleSet (node_modules/@nuxt/webpack/node_modules/webpack/lib/RuleSet.js:104:24)
  at new NormalModuleFactory (node_modules/@nuxt/webpack/node_modules/webpack/lib/NormalModuleFactory.js:115:18)
  at Compiler.createNormalModuleFactory (node_modules/@nuxt/webpack/node_modules/webpack/lib/Compiler.js:636:31)
  at Compiler.newCompilationParams (node_modules/@nuxt/webpack/node_modules/webpack/lib/Compiler.js:653:30)
  at Compiler.compile (node_modules/@nuxt/webpack/node_modules/webpack/lib/Compiler.js:661:23)
  at node_modules/@nuxt/webpack/node_modules/webpack/lib/Watching.js:77:18
  at AsyncSeriesHook.eval [as callAsync] (eval at create (node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:24:1)
  at AsyncSeriesHook.lazyCompileHook (node_modules/tapable/lib/Hook.js:154:20)
  at Watching._go (node_modules/@nuxt/webpack/node_modules/webpack/lib/Watching.js:41:32)
  at node_modules/@nuxt/webpack/node_modules/webpack/lib/Watching.js:33:9
  at Compiler.readRecords (node_modules/@nuxt/webpack/node_modules/webpack/lib/Compiler.js:529:11)

我尝试重新安装依赖项，重新安装一个完全干净的 Nuxt 应用程序，但问题仍然存在。

Answer 1

要在 Nuxt 中安装 SASS，您必须运行 yarn add -D sass sass-loader@10.1.1（或 npm i -D sass-loader@10.1.1 --save-exact && npm i -D sass）。

sass-loader 的版本需要准确并设置为最新的10.x.x，因为下一个 (11.0.0) 使用的是 Webpack5，因此这是一个重大更改，因为 Nuxt2 仅在 Webpack4 上运行，如下所示： https://github.com/webpack-contrib/sass-loader/releases

如果那么，您仍然不能在您的.vue 组件中使用<style lang="sass">，然后继续。

---

将此添加到您的 nuxt.config.js 文件中

export default {
  build: {
    loaders: {
      sass: {
        implementation: require('sass'),
      },
      scss: {
        implementation: require('sass'),
      },
    },
  }
}

这是一个working repo，最新推荐的sass (dart-sass) 设置可以正常使用这种代码

<template>
  <div>
    <span class="test">
      Hello there
    </span>
  </div>
</template>

<style lang="sass" scoped>
div
  .test
    color: red
</style>

PS：如果 SASS 安装正确，那么 SCSS 也可以正常工作，因为它基本上是一样的。

---

如果您对某些已弃用的内容（例如 / for divison 或此处列出的任何内容）有一些警告：https://sass-lang.com/documentation/breaking-changes
您可以参考此答案进行修复：https://stackoverflow.com/a/68648204/8816585