vue-cli3.0搭建与配置

vue-cli3.0搭建与配置

## 为什么要使用 vue-cli3.0

1. 模板更加制定化

2. 配置更加简洁

## 如何新建项目

### 使用 npm 全局安装 vue-cli :

1. npm install -g @vue/cli  //如果已经安装过就不用安装了

### 创建项目执行:

1. vue create my-project

### 选择项目类型

```js
Vue CLI v3.0.0-beta.6
? Please pick a preset: (Use arrow keys)
> xs-default (vue-router, vuex, stylus, babel, pwa, eslint, unit-jest) // 这是我运行过之后的默认设置,第一次执行create是没有的
  default (babel, eslint)
  Manually select features

// 注:按键盘上下键选择默认(default)还是手动(Manually),
//如果选择default,一路回车执行下去就行了(注:现在vue-cli3.0默认使用yarn下载),这里我选择手动,

```
### 选择特性支持

```js

? 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)
>( ) TypeScript                                 // 支持使用 TypeScript 书写源码
 ( ) Progressive Web App (PWA) Support          // PWA 支持
 ( ) Router                                     // 支持 vue-router
 ( ) Vuex                                       // 支持 vuex
 ( ) CSS Pre-processors                         // 支持 CSS 预处理器。
 ( ) Linter / Formatter                         // 支持代码风格检查和格式化。
 ( ) Unit Testing                               // 支持单元测试。
 ( ) E2E Testing                                // 支持 E2E 测试。

 // 注意:你要集成什么就选就行了(注:空格键是选中与取消,A键是全选)

```

### 选择css预处理,这里我选择stylus

```js

? Please pick a preset: Manually select features
? Check the features needed for your project: Router, Vuex, CSS Pre-processors, Linter, Unit
? Pick a CSS pre-processor (PostCSS, Autoprefixer and CSS Modules are supported by default):
> SCSS/SASS
  LESS
  Stylus

```

### 选择ESLint + Prettier

``` js

? Please pick a preset: Manually select features
? Check the features needed for your project: Router, Vuex, CSS Pre-processors, Linter, Unit
? Pick a CSS pre-processor (PostCSS, Autoprefixer and CSS Modules are supported by default): Stylus
? Pick a linter / formatter config: (Use arrow keys)
> ESLint with error prevention only
  ESLint + Airbnb config
  ESLint + Standard config
  ESLint + Prettier

```

### 选择语法检查方式,这里我选择保存就检测

```js

Vue CLI v3.0.0-beta.6
? Please pick a preset: Manually select features
? Check the features needed for your project: Router, Vuex, CSS Pre-processors, Linter, Unit
? Pick a CSS pre-processor (PostCSS, Autoprefixer and CSS Modules are supported by default): Stylus
? Pick a linter / formatter config: Prettier
? Pick additional lint features: (Press <space> to select, <a> to toggle all, <i> to invert selection)
>( ) Lint on save // 保存就检测
 ( ) Lint and fix on commit // fix和commit时候检查

```

### 选择单元测试

```js

Vue CLI v3.0.0-beta.6
? Please pick a preset: Manually select features
? Check the features needed for your project: Router, Vuex, CSS Pre-processors, Linter, Unit
? Pick a CSS pre-processor (PostCSS, Autoprefixer and CSS Modules are supported by default): Stylus
? Pick a linter / formatter config: Prettier
? Pick additional lint features: Lint on save
? Pick a unit testing solution: (Use arrow keys)
> Mocha + Chai
  Jest

```

### 她会问你 ,把babel,postcss,eslint这些配置文件放哪,这里随便选,我选择放在独立文件夹

```js

Vue CLI v3.0.0-beta.6
? Please pick a preset: Manually select features
? Check the features needed for your project: Router, Vuex, CSS Pre-processors, Linter, Unit
? Pick a CSS pre-processor (PostCSS, Autoprefixer and CSS Modules are supported by default): Stylus
? Pick a linter / formatter config: Prettier
? Pick additional lint features: Lint on save
? Pick a unit testing solution: Jest
? Where do you prefer placing config for Babel, PostCSS, ESLint, etc.? (Use arrow keys)
> In dedicated config files // 独立文件放置
  In package.json // 放package.json里

```

### 键入N不记录,如果键入Y需要输入保存名字,如第一步所看到的我保存的名字为xs-default

```js

Vue CLI v3.0.0-beta.6
? Please pick a preset: Manually select features
? Check the features needed for your project: Router, Vuex, CSS Pre-processors, Linter, Unit
? Pick a CSS pre-processor (PostCSS, Autoprefixer and CSS Modules are supported by default): Stylus
? Pick a linter / formatter config: Prettier
? Pick additional lint features: Lint on save
? Pick a unit testing solution: Jest
? Where do you prefer placing config for Babel, PostCSS, ESLint, etc.? In dedicated config files
? Save this as a preset for future projects? (Y/n) // 是否记录一下以便下次继续使用这套配置

```

### 确定后,等待下载依赖模块

## 启动项目

1. 初始完之后,进入到项目根目录: cd my-project

2. 启动项目:npm run serve

3. 在浏览器输入http://localhost:8080就可以看到vue的欢迎界面

## 打包上线

1. vue-cli 也提供了打包的命令,在项目根目录下执行: npm run build

2. 执行完之后,可以看到在项目根目录下多出了一个 dist 目录,该目录下就是打包好的所有静态资源,直接部署到静态资源服务器就好了。

## 项目的大致目录结构
![项目的大致目录结构](https://upload-images.jianshu.io/upload_images/11576163-c7432e7ebd756d2d.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/428 "项目的大致目录结构.jpg")

1. 现在的目录是3.0的cli看上去简洁多了,去掉了2.0 build和config等目录

2. 关于代码编写基本上与vue2的目录结构相差不大

## 注意:

1. 如果想要修改端口号以及webpack配置,需要你在根目录下面创建一个vue.config.js

## vue.config.js完整默认配置

```js
module.exports = {
  /** 区分打包环境与开发环境
   * process.env.NODE_ENV==='production'  (打包环境)
   * process.env.NODE_ENV==='development' (开发环境)
   * baseUrl: process.env.NODE_ENV==='production'?"https://cdn.didabisai.com/front/":'front/',
   */
 // 基本路径
 baseUrl: '/',
 // 输出文件目录
 outputDir: 'dist',
 // eslint-loader 是否在保存的时候检查
 lintOnSave: true,
 // use the full build with in-browser compiler?
 // https://vuejs.org/v2/guide/installation.html#Runtime-Compiler-vs-Runtime-only
 compiler: false,
 // webpack配置
 // see https://github.com/vuejs/vue-cli/blob/dev/docs/webpack.md
 chainWebpack: () => {},
 configureWebpack: () => {},
 //如果想要引入babel-polyfill可以这样写
 // configureWebpack: (config) => {
 //   config.entry = ["babel-polyfill", "./src/main.js"]
 // },
 // vue-loader 配置项
 // https://vue-loader.vuejs.org/en/options.html
 vueLoader: {},
 // 生产环境是否生成 sourceMap 文件
 productionSourceMap: true,
 // css相关配置
 css: {
  // 是否使用css分离插件 ExtractTextPlugin
  extract: true,
  // 开启 CSS source maps?
  sourceMap: false,
  // css预设器配置项
  loaderOptions: {},
  // 启用 CSS modules for all css / pre-processor files.
  modules: false
 },
 // use thread-loader for babel & TS in production build
 // enabled by default if the machine has more than 1 cores
 parallel: require('os').cpus().length > 1,
 // 是否启用dll
 // See https://github.com/vuejs/vue-cli/blob/dev/docs/cli-service.md#dll-mode
 dll: false,
 // PWA 插件相关配置
 // see https://github.com/vuejs/vue-cli/tree/dev/packages/%40vue/cli-plugin-pwa
 pwa: {},
 // webpack-dev-server 相关配置
 devServer: {
  open: process.platform === 'darwin',
  host: '0.0.0.0',
  port: 8080,
  https: false,
  hotOnly: false,
  proxy: null, // 设置代理
  before: app => {}
 },
 // 第三方插件配置
 pluginOptions: {
  // ...
 }
}

```

## 后记:

1. 当你准备着手一个新的项目的时候,请事先想清楚这个项目的架构以及用到的ui组件等等

2. 比如我们的项目

```
1. 使用vant UI组件
2. 封装axios服务
3. 使用路由拆分(基于history)
4. 路由切换动画
。。。
``` 

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转载自www.cnblogs.com/Anthony518/p/12009628.html