npmnode-sass安装失败解决方法

npmnode-sass安装失败解决⽅法

node-sass安装失败，提⽰如下：

gyp verb check python checking for Python executable "python" in the PATH

gyp verb `which` succeeded python D:\Program Files\Python38\python.EXE

gyp ERR! configure error

gyp ERR! stack Error: Command failed: D:\Program Files\Python38\python.EXE -c import sys; print "%s.%s.%s" % sys.version_info[:3];

gyp ERR! stack File "<string>", line 1电压互感器柜

电流器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

plc学习机gyp ERR! stack ithandler (child_process.js:303:12)

gyp ERR! stack it (events.js:310:20)

gyp ERR! stack at maybeClose (internal/child_process.js:1021:16)

gyp ERR! stack at Process.ChildProcess._it (internal/child_process.js:286:5)

gyp ERR! System Windows_NT 10.0.18362

甲醇燃料灶gyp ERR! command "D:\\Program Files\\nodejs\\" "E:\\JDProject\\renren-fast-vue\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library=" gyp ERR! cwd E:\JDProject\renren-fast-vue\node_modules\node-sass

gyp ERR! node -v v12.16.3

gyp ERR! node-gyp -v v3.8.0

gyp ERR! not ok

Build failed with error code: 1

spta

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.9 (node_modules\fsevents):

npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.9: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

npm ERR! code ELIFECYCLE

npm ERR! errno 1

npm ERR! node-sass@4.9.0 postinstall: `node scripts/build.js`

npm ERR! Exit status 1

npm ERR!

npm ERR! Failed at the node-sass@4.9.0 postinstall script.

npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:

npm ERR! C:\Users\HP\AppData\Roaming\npm-cache\_logs\2020-05-23T06_27_44_952Z-debug.log

原因：

print "%s.%s.%s" % sys.version_info[:3];

为python2.x版本的语法，如果本地安装的是python3.x，就会报此错误

解决⽅法：

1. 删除项⽬中的package-lock.json⽂件，清除缓存，更新版本号

#后续步骤运⾏npm install 命令时会重新⽣成package-lock.json⽂件

1 npm cache clear --force

2 修改 package.json ⽂件提⾼ node-sass 版本

"node-sass": "4.14.1",

"npm": "^6.14.5", #sass-loader版本为可选项，如果项⽬很旧，sass-loader版本最好不要改动，否则容易引起项⽬启动异常

"sass-loader": "8.0.2",

3 保存后重新 npm install 即可

之所以报就是上⾯那个该死的 "C\"不到。

原因是 node-sass跟node就版本对应的问题的。

打开命令⾏查看 node版本: node -v

node版本不对应，升级node或者降级

查看node-sass和sass-loader版本是否对应

汽车杯以下是部分版本号对应，具体可百度

sass-loader 4.1.1，node-sass 4.3.0

sass-loader 7.0.3，node-sass 4.7.2

sass-loader 7.3.1，node-sass 4.7.2

sass-loader 7.3.1，node-sass 4.14.1

在项⽬环境中执⾏

npm uninstall node-sass sass-loader

npm install sass-loader@版本号 node-sass@版本号 --save-dev //安装对应的版本

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