报错情况如下：
gyp ERR! build error
gyp ERR! stack Error: `C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\MSBuild\15.0\Bin\MSBuild.exe` failed with exit code: 1
gyp ERR! stack at ChildProcess.onExit (C:\Users\hoby\Desktop\renren-fast-vue\node_modules\node-gyp\lib\build.js:262:23)
gyp ERR! stack at ChildProcess.emit (events.js:311:20)
gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:275:12)
gyp ERR! System Windows_NT 10.0.18363
gyp ERR! command "D:\\nodejs\\node.exe" "C:\\Users\\hoby\\Desktop\\renren-fast-vue\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
gyp ERR! cwd C:\Users\hoby\Desktop\renren-fast-vue\node_modules\node-sass
gyp ERR! node -v v12.16.1
gyp ERR! node-gyp -v v3.8.0
gyp ERR! not ok
Build failed with error code: 1
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.9 (node_modules\fsevents):
rch":"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\hoby\AppData\Roaming\npm-cache\_logs\2020-04-05T02_59_44_335Z-debug.log
解决方法：
主要是windows平台缺少编译环境，
1、先运行： npm install -g node-gyp
2、然后运行：运行 npm install --global --production windows-build-tools
可以自动安装跨平台的编译器
npm uninstall node-sass
npm i node-sass --sass_binary_site=https://npm.taobao.org/mirrors/node-sass/
接着就可以
npm install
npm run dev
