vue2 sass 安装及使用(vuescan怎么安装)

vue2 sass 安装及使用

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最近在看前端。其一因为手里有个项目uniapp的里面使用了sass，但是有sass报错，其次想自己写个vue2后台，感觉sass写起来科学点。但是……版本这个东西……太费劲了……

vue2-cli集成webpack，使用vue create 项目名后再安装sass相当于在webpack的基础上安装sass。需要安装sass依赖包 sass-loader,以及它的依赖包sass-loader。看很多教程说在build/webpack.config.js中再改东西，但是我用vue2创建的项目没找到这个文件先忽略。

安装环境：

win10

webpack 5.75 //系统全局

vue2

@vue/cli 4.5.14//重点

安装步骤：

vue create testsass

cd testsass

npm i sass-loader

npm i node-sassnpm WARN deprecated @npmcli/move-file@1.1.2: This functionality has been moved to @npmcli/fsnpm WARN deprecated @npmcli/move-file@2.0.1: This functionality has been moved to @npmcli/fsadded 140 packages in 11s

贴出来就想证明下，这步没报错……

npm i node-sass

报错：

npm i sass-loadernpm ERR! code ERESOLVEnpm ERR! ERESOLVE could not resolvenpm ERR! npm ERR! While resolving: testsass@0.1.0npm ERR! Found: webpack@4.46.0npm ERR! node_modules/webpacknpm ERR! peer webpack@"^4.0.0" from @intervolga/optimize-cssnano-plugin@1.0.6 npm ERR! node_modules/@intervolga/optimize-cssnano-pluginnpm ERR! @intervolga/optimize-cssnano-plugin@"^1.0.5" from @vue/cli-service@4.5.19npm ERR! node_modules/@vue/cli-servicenpm ERR! peer @vue/cli-service@"^3.0.0 || ^4.0.0-0" from @vue/cli-plugin-babel@4.5.19npm ERR! node_modules/@vue/cli-plugin-babelnpm ERR! dev @vue/cli-plugin-babel@"~4.5.14" from the root project npm ERR! 4 more (@vue/cli-plugin-eslint, @vue/cli-plugin-router, ...) npm ERR! peer webpack@"^4.0.0 || ^5.0.0" from @soda/friendly-errors-webpack-plugin@1.8.1npm ERR! node_modules/@soda/friendly-errors-webpack-pluginnpm ERR! @soda/friendly-errors-webpack-plugin@"^1.7.1" from @vue/cli-service@4.5.19npm ERR! node_modules/@vue/cli-servicenpm ERR! peer @vue/cli-service@"^3.0.0 || ^4.0.0-0" from @vue/cli-plugin-babel@4.5.19npm ERR! node_modules/@vue/cli-plugin-babelnpm ERR! dev @vue/cli-plugin-babel@"~4.5.14" from the root project npm ERR! 4 more (@vue/cli-plugin-eslint, @vue/cli-plugin-router, ...) npm ERR! 19 more (@vue/cli-plugin-babel, @vue/cli-plugin-eslint, ...)npm ERR!npm ERR! Could not resolve dependency:npm ERR! sass-loader@"*" from the root projectnpm ERR!npm ERR! Conflicting peer dependency: webpack@5.75.0npm ERR! node_modules/webpacknpm ERR! peer webpack@"^5.0.0" from sass-loader@13.2.0npm ERR! node_modules/sass-loadernpm ERR! sass-loader@"*" from the root projectnpm ERR!npm ERR! Fix the upstream dependency conflict, or retrynpm ERR! this command with --force, or --legacy-peer-depsnpm ERR! to accept an incorrect (and potentially broken) dependency resolution. npm ERR!npm ERR! See C:\Users\ZHAA\AppData\Local\npm-cache\eresolve-report.txt for a full report.npm ERR! A complete log of this run can be found in:npm ERR! C:\Users\ZHAA\AppData\Local\npm-cache\_logs\2022-11-19T07_58_28_099Z-debug.log

根据内容大概意思，找到webpack环境4.46.0需要5版本及以上，就是安装的版本高了。

找到问题查版本……

npm 13:sass-loader - npm

npm 13 git:https://github.com/webpack-contrib/sass-loader/blob/master/package.json

确实如报错所说……

然后用上述方法看了 从7版本到13版本的，都是5.0以上，但是通过实践7版本是可以按的。

npm i sass-loader@7added 5 packages in 3snpm uninstall sass-loaderremoved 5 packages in 3sD:\workspace\html\vue\testsass>npm i sass-loader@8 npm ERR! code ERESOLVEnpm ERR! ERESOLVE could not resolvenpm ERR!npm ERR! While resolving: sass-loader@8.0.2npm ERR! Found: node-sass@8.0.0npm ERR! node_modules/node-sassnpm ERR! node-sass@"^8.0.0" from the root projectnpm ERR!npm ERR! Could not resolve dependency:npm ERR! peerOptional node-sass@"^4.0.0" from sass-loader@8.0.2npm ERR! node_modules/sass-loadernpm ERR! sass-loader@"8" from the root projectnpm ERR!npm ERR! Conflicting peer dependency: node-sass@4.14.1npm ERR! node_modules/node-sassnpm ERR! peerOptional node-sass@"^4.0.0" from sass-loader@8.0.2npm ERR! node_modules/sass-loadernpm ERR! sass-loader@"8" from the root projectnpm ERR!npm ERR! Fix the upstream dependency conflict, or retrynpm ERR! this command with --force, or --legacy-peer-depsnpm ERR! to accept an incorrect (and potentially broken) dependency resolution.npm ERR!npm ERR! See C:\Users\ZHAA\AppData\Local\npm-cache\eresolve-report.txt for a full report.npm ERR! A complete log of this run can be found in:npm ERR! C:\Users\ZHAA\AppData\Local\npm-cache\_logs\2022-11-19T08_31_26_140Z-debug.log

事实证明，就是7好使……但是后面还是有问题……

改testsass\src\components\HelloWord.vue：

<style lang="sass"> body{ padding:10px; }</style

  报错：Syntax Error: Error: Node Sass version 8.0.0 is incompatible with ^4.0.0.

   原因是node-sass版本过高。

node-sass 换成6的：

npm uninstall node-sassnpm WARN cleanup Failed to remove some directories [npm WARN cleanup [npm WARN cleanup 'D:\\workspace\\html\\vue\\testsass\\node_modules\\.node-sass-3UXcrxZ0',npm WARN cleanup [Error: EPERM: operation not permitted, unlink 'D:\workspace\html\vue\testsass\node_modules\.node-sass-3UXcrxZ0\vendor\win32-x64-93\binding.node'] {npm WARN cleanup errno: -4048,npm WARN cleanup code: 'EPERM',npm WARN cleanup syscall: 'unlink',npm WARN cleanup path: 'D:\\workspace\\html\\vue\\testsass\\node_modules\\.node-sass-3UXcrxZ0\\vendor\\win32-x64-93\\binding.node'npm WARN cleanup }npm WARN cleanup ]npm WARN cleanup ]removed 140 packages in 58snpm install node-sass@6 added 93 packages in 1m

这些操作之后按理说应该已经没问题了，至少报错应该不一样了吧，但是并没有，还得把pageage-lock.json再删一遍，再编译一遍报错就改了……mmp

Syntax Error: Error: Node Sass version 6.0.1 is incompatible with ^4.0.0.

我就好奇这4.0.0指的是啥……

好吧vue-cli内置的weback4.0版本，接着改……

省去查版本的时间：sass-loader、node-sass安装失败问题解决_前端学习007的博客-CSDN博客

根据这篇文章用4.13的，然后我按4版本时安装时报错。

改变修改思路，升级vue-cli版本，理论上配置根据当前的package.json，cli只是构建目录，之前的项目应该不会受影响。

既然是vue-cli内置的webpack版本问题，一个升级vue-cli，一个直接用webpack。

目前cli升级完了，明天继续折腾。

这前端……好麻烦，比我折腾linux还麻烦……

这篇文章，总结下来就一个观点，vue-cli 4版本的用sass不方便。