使用vue cli4.x搭建vue项目的过程详解

? Please pick a preset: (Use arrow keys) ☜(使用箭头键)
> default (babel, eslint)   ☜(使用默认的配置，会安装babel和eslint)
 Manually select features  ☜(手动配置)

? Please pick a preset: Manually select features
? Check the features needed for your project: (Press <space> to select, <a> to toggle all, <i> to invert selection)
>(*) Babel     ☜(转码器，可以将ES6代码转为ES5代码)
 ( ) TypeScript    ☜( js的超集，强类型语言)
 ( ) Progressive Web App (PWA) Support ☜(渐进式Web应用程序)
 ( ) Router    ☜(vue-router（vue路由）)
 ( ) Vuex     ☜(vuex（vue的状态管理模式）)
 ( ) CSS Pre-processors   ☜(CSS 预处理器（如：less、sass）)
 (*) Linter / Formatter   ☜(代码风格检查和格式化（如：ESlint）)
 ( ) Unit Testing    ☜(单元测试)
 ( ) E2E Testing    ☜(集成测试)

?Use class-style component syntax? (Y/n)： ☜(是否使用babel做转义)

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?Use Babel alongside TypeScript (required for modern mode, auto-detected polyfills, transpiling JSX)? ☜(使用Babel与TypeScript一起用于自动检测的填充)

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?Use history mode for router? (Requires proper server setup for index fallback in production) ☜(路由模式)

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?Pick a CSS pre-processor (PostCSS, Autoprefixer and CSS Modules are supported by default): (Use arrow keys) ☜(CSS编译器)
> Sass/SCSS (with dart-sass) ☜(保存后编译)
 Sass/SCSS (with node-sass) ☜(实时编译)
 Less
 Stylus
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?Pick a linter / formatter config: (Use arrow keys) ☜(选择语法检查规范)
> ESLint with error prevention only   ☜(只进行报错提醒)
 ESLint + Airbnb config    ☜(不严谨模式)
 ESLint + Standard config    ☜(正常模式)
 ESLint + Prettier     ☜(严格模式)
 TSLint (deprecated)    ☜(typescript格式验证工具)
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? Pick additional lint features: (Press <space> to select, <a> to toggle all, <i> to invert selection) ☜(选择什么时候进行代码规则检测)
>(*) Lint on save     ☜(保存就检测)
( ) Lint and fix on commit    ☜(fix和commit时候检测)
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? Pick a unit testing solution
>(*) Mocha + Chai  ☜(mocha灵活,只提供简单的测试结构，如果需要其他功能需要添加其他库/插件完成。必须在全局环境中安装)
( ) Jest   ☜(安装配置简单，容易上手。内置Istanbul，可以查看到测试覆盖率，相较于Mocha:配置简洁、测试代码简洁、易于和babel集成、内置丰富的expect)
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? Where do you prefer placing config for Babel, ESLint, etc.? (Use arrow keys) ☜(选择如何存放配置测) 
> In dedicated config files ☜(独立文件放置) 
 In package.json  ☜(放package.json里) 
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 ? Save this as a preset for future projects? (y/N) ☜(保存上述配置，保存后下一次可直接根据上述配置生成项目，就是上面提到的第三种情况) 

npm uninstall -g @vue-cli

npm install -g @vue-cli

npm install -g @vue-cli