新建vue项目

### 新建vue项目
npm install @vue/cli -g   // 如果安装过脚手架，不必再次安装
vue create vision
手动选择一些特性  > Manually select features
------------------
空格选择一些插件
 Check the features needed for your project:
 ( ) Choose Vue version
 (*) Babel
 ( ) TypeScript
 ( ) Progressive Web App (PWA) Support
>(*) Router
 (*) Vuex
 (*) CSS Pre-processors
 (*) Linter / Formatter
 ( ) Unit Testing
 ( ) E2E Testing
------------------- 
是否使用历史模式的路由
? Use history mode for router? (Requires proper server setup for index fallback in production) (Y/n) n
------------------
css预处理
? Pick a CSS pre-processor (PostCSS, Autoprefixer and CSS Modules are supported by default):
  Sass/SCSS (with dart-sass)
  Sass/SCSS (with node-sass)
> Less
  Stylus
----------------------
标准eslint
? Pick a linter / formatter config:
  ESLint with error prevention only
  ESLint + Airbnb config
> ESLint + Standard config
  ESLint + Prettier  
----------------------
保存文件的时候提示
? Pick additional lint features: (Press <space> to select, <a> to toggle all, <i> to invert selection)
>(*) Lint on save
 ( ) Lint and fix on commit
------------------  
配置文件怎么处理--单独文件处理
? Where do you prefer placing config for Babel, ESLint, etc.? (Use arrow keys)
> In dedicated config files
  In package.json
-----------------  
以上的选择是否保存预设
 Save this as a preset for future projects? (y/N) n
--------------------
 npm run serve