我们在vscode中利用下面命令安装node.sass
npm i node-sass -D
如果出现下面类似报错，出现很多gyp ERR之类的东西(我的是windows系统)：
gyp ERR! build error
gyp ERR! stack Error: `C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe` failed with exit code: 1
gyp ERR! stack at ChildProcess.onExit (E:\web_hwf\Vue\02app\node_modules\node-gyp\lib\build.js:258:23)
gyp ERR! stack at ChildProcess.emit (events.js:182:13)
gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:235:12)
gyp ERR! System Windows_NT 6.1.7601
gyp ERR! command "E:\\26_nodejs\\node.exe" "E:\\web_hwf\\Vue\\02app\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
gyp ERR! cwd E:\web_hwf\Vue\02app\node_modules\node-sass
gyp ERR! node -v v10.1.0
gyp ERR! node-gyp -v v3.6.2
gyp ERR! not ok
Build failed with error code: 1
npm WARN rollback Rolling back source-map@0.4.4 failed (this is probably harmless): EPERM: operation not permitted, lstat 'E:\web_hwf\Vue\02app\node_modules\scss-tokenizer\node_modules'
npm WARN eslint-config-standard@6.2.1 requires a peer of eslint-plugin-promise@>=3.3.0 but none is installed. You must install peer dependencies yourself.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.4 (node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.4: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! node-sass@3.13.1 postinstall: `node scripts/build.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the node-sass@4.13.1 postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
解决办法：
1.在管理员模式下打开vscode：
鼠标右键点击以管理员身份运行。
2.在项目下打开终端运行：
npm i -g node-gyp
然后运行：
npm i --global --production windows-build-tools
问题解决！！！
