前言：
运行小程序代码时出现这个报错，百度了好久终于解决，整理一下以作纪念。

报错：

error G:\Codes\XXX\node_modules\node-sass: Command failed.
Exit code: 1
Command: node scripts/build.js
Arguments:
Directory: G:\Codes\XXX\node_modules\node-sass
Output:
Building: C:\Program Files\nodejs\node.exe G:\Codes\XXX\node_modules\node-gyp\bin\node-gyp.js rebuild --verbose --libsass_ext= --libsass_cflags= --libsass_ldflags= --libsass_library=
gyp info it worked if it ends with ok
gyp verb cli [
gyp verb cli   'C:\\Program Files\\nodejs\\node.exe',
gyp verb cli   'G:\\Codes\\XXX\\node_modules\\node-gyp\\bin\\node-gyp.js',
gyp verb cli   'rebuild',
gyp verb cli   '--verbose',
gyp verb cli   '--libsass_ext=',
gyp verb cli   '--libsass_cflags=',
gyp verb cli   '--libsass_ldflags=',
gyp verb cli   '--libsass_library='
gyp verb cli ]
gyp info using node-gyp@3.8.0
gyp info using node@16.13.1 | win32 | x64
gyp verb command rebuild []
gyp verb command clean []
gyp verb clean removing "build" directory
gyp verb command configure []
gyp verb download using dist-url https://npm.taobao.org/dist
gyp verb check python checking for Python executable "python2" in the PATH
gyp verb `which` failed Error: not found: python2
gyp verb `which` failed     at getNotFoundError (G:\Codes\sthd-customer-client\node_modules\which\which.js:13:12)
gyp verb `which` failed     at F (G:\Codes\sthd-customer-client\node_modules\which\which.js:68:19)
gyp verb `which` failed     at E (G:\Codes\sthd-customer-client\node_modules\which\which.js:80:29)
gyp verb `which` failed     at G:\Codes\sthd-customer-client\node_modules\which\which.js:89:16
gyp verb `which` failed     at G:\Codes\sthd-customer-client\node_modules\isexe\index.js:42:5
gyp verb `which` failed     at G:\Codes\sthd-customer-client\node_modules\isexe\windows.js:36:5
gyp verb `which` failed     at FSReqCallback.oncomplete (node:fs:198:21)
gyp verb `which` failed  python2 Error: not found: python2
gyp verb `which` failed     at getNotFoundError (G:\Codes\sthd-customer-client\node_modules\which\which.js:13:12)
gyp verb `which` failed     at F (G:\Codes\sthd-customer-client\node_modules\which\which.js:68:19)
gyp verb `which` failed     at E (G:\Codes\sthd-customer-client\node_modules\which\which.js:80:29)
gyp verb `which` failed     at G:\Codes\sthd-customer-client\node_modules\which\which.js:89:16
gyp verb `which` failed     at G:\Codes\sthd-customer-client\node_modules\isexe\index.js:42:5
gyp verb `which` failed     at G:\Codes\sthd-customer-client\node_modules\isexe\windows.js:36:5
gyp verb `which` failed     at FSReqCallback.oncomplete (node:fs:198:21) {
gyp verb `which` failed   code: 'ENOENT'
gyp verb `which` failed }
gyp verb check python checking for Python executable "python" in the PATH
gyp verb `which` succeeded python C:\Users\Administrator\AppData\Local\Programs\Python\Python38\python.EXE
gyp ERR! configure error
gyp ERR! stack Error: Command failed: C:\Users\Administrator\AppData\Local\Programs\Python\Python38\python.EXE -c import sys; print "%s.%s.%s" % sys.version_info[:3];
gyp ERR! stack   File "<string>", line 1
gyp ERR! stack     import sys; print "%s.%s.%s" % sys.version_info[:3];
gyp ERR! stack                       ^
gyp ERR! stack SyntaxError: invalid syntax
gyp ERR! stack
gyp ERR! stack     at ChildProcess.exithandler (node:child_process:397:12)
gyp ERR! stack     at ChildProcess.emit (node:events:390:28)
gyp ERR! stack     at maybeClose (node:internal/child_process:1064:16)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (node:internal/child_process:301:5)
gyp ERR! System Windows_NT 10.0.17763
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "G:\\Codes\\XXX\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
gyp ERR! cwd G:\Codes\sthd-customer-client\node_modules\node-sass
gyp ERR! node -v v16.13.1

原因：
有说是被墙了，让换淘宝镜像的，未能解决。

    有说是要安装python环境，推荐安装2.7，设置了环境变量之后，报错依旧。

    ......

    我这边的问题其实是node.js的版本问题。

解决方案1：
win + r 输入命令 cmd 运行 node -v 查看版本，

卸载后，安装14.18.3，旧版本下载地址：node.js 14.18.3 版本下载

解决方案2：
利用nvm版本控制，nvm for windows 下载，下载地址：nvm下载，github

    推荐下载 nvm-setup.zip， 解压后直接安装使用（推荐安装到默认路径）。

    输入命令 nvm

出现图示则安装成功（我这边重启电脑后才出现这个的😓）

    附nvm部分命令：

nvm install v14.18.3 安装指定版本（以14.18.3为例）
nvm install latest 可选参数arch指定安装32位还是64位版本，默认是系统位数。可以添加–insecure绕过远程服务器的SSL
nvm list 查看已有版本（也可简写成 nvm ls）
nvm use v14.18.3 切换到指定版本（以14.18.3为例）
nvm uninstall 14.18.3 卸载指定版本（以14.18.3为例）
nvm on 开启node.js版本管理
nvm off 关闭node.js版本管理
nvm proxy [url] 设置下载代理。不加可选参数url，显示当前代理。将url设置为none则移除代理
nvm node_mirror [url] 设置node镜像。默认是https://nodejs.org/dist/。如果不写url，则使用默认url。设置后可至安装目录settings.txt文件查看，也可直接在该文件操作
nvm npm_mirror [url] 设置npm镜像。https://github.com/npm/cli/archive/。如果不写url，则使用默认url。设置后可至安装目录settings.txt文件查看，也可直接在该文件操作
nvm root [path] 设置存储不同版本node的目录。如果未设置，默认使用当前目录
新的问题（使用方案2出现）：
利用nvm切换版本之后，npm无法使用，提示：‘npm’ 不是内部或外部命令,也不是可运行的程序

原因：
nvm对应的版本文件夹内，文件夹node_modules为空
解决：
在 node.js 14.18.3 版本下载 下载14.18.3的.zip二进制文件夹，然后解压，将node_modules问价夹替换掉，并将如下4个文件粘贴进去。

PS：
使用NVM接管node版本包之后，部分情况需要先卸载原有的nodejs！

完结撒盐！