npm run dev 启动时，报了一大堆错误：
Node Sass could not find a binding for your current environment: Windows 64-bit with Node.js 8.x
Found bindings for the following environments:

• Windows 64-bit with Node.js 8.x
  This usually happens because your environment has changed since running npm install.
  Run npm rebuild node-sass to download the binding for your current environment.
  at module.exports (D:\vuejs\vue-admin-master\node_modules\node-sass\lib\binding.js:15:13)
  at Object.<anonymous> (D:\vuejs\vue-admin-master\node_modules\node-sass\lib\index.js:14:35)
  at Module._compile (module.js:652:30)
  at Object.Module._extensions..js (module.js:663:10)
  at Module.load (module.js:565:32)
  at tryModuleLoad (module.js:505:12)
  at Function.Module._load (module.js:497:3)
  at Module.require (module.js:596:17)
  at require (internal/module.js:11:18)
  at Object.<anonymous> (D:\vuejs\vue-admin-master\node_modules\sass-loader\lib\loader.js:3:14)
  at Module._compile (module.js:652:30)
  at Object.Module._extensions..js (module.js:663:10)
  at Module.load (module.js:565:32)
  at tryModuleLoad (module.js:505:12)
  at Function.Module._load (module.js:497:3)
  at Module.require (module.js:596:17)
  @ ./_{/vue-style-loader!./}/css-loader!./~/vue-loader/lib/style-compiler?{“id”:”data-v-37fa8aa7″,”scoped”:false,”hasInli
  neConfig”:true}!./_{/sass-loader/lib/loader.js!./}/vue-loader/lib/selector.js?type=styles&index=0!./client/App.vue 4:14-3
  03 13:3-17:5 14:22-311
  @ ./client/App.vue
  @ ./client/app.js
  @ ./client/index.js
  @ multi ./build/dev-client ./client/index.js

使用 npm rebuild node-sass，然后在更新一下npm update

node-sass@3.13.1 install D:\vuejs\vue-admin-master\node_modules\wysiwyg.css\node_modules\node-sass
node scripts/install.js
node-sass build Binary found at D:\vuejs\vue-admin-master\node_modules\wysiwyg.css\node_modules\node-sass\vendor\win32-x
64-57\binding.node
node-sass@3.13.1 postinstall D:\vuejs\vue-admin-master\node_modules\wysiwyg.css\node_modules\node-sass
node scripts/build.js
Binary found at D:\vuejs\vue-admin-master\node_modules\wysiwyg.css\node_modules\node-sass\vendor\win32-x64-57\binding.no
de
Testing binary
Binary is fine
node-sass@4.9.3 install D:\vuejs\vue-admin-master\node_modules\node-sass
node scripts/install.js
Downloading binary from https://github.com/sass/node-sass/releases/download/v4.9.3/win32-x64-57_binding.node
Download complete ] – :
Binary saved to D:\vuejs\vue-admin-master\node_modules\node-sass\vendor\win32-x64-57\binding.node
Caching binary to C:\Users\yxc\AppData\Roaming\npm-cache\node-sass\4.9.3\win32-x64-57_binding.node
node-sass@4.9.3 postinstall D:\vuejs\vue-admin-master\node_modules\node-sass
node scripts/build.js
Binary found at D:\vuejs\vue-admin-master\node_modules\node-sass\vendor\win32-x64-57\binding.node
Testing binary
Binary is fine
node-sass@3.13.1 D:\vuejs\vue-admin-master\node_modules\wysiwyg.css\node_modules\node-sass
node-sass@4.9.3 D:\vuejs\vue-admin-master\node_modules\node-sass

npm run dev就好了