如何搭建一个cli脚本

准备工作
1.有一个自己得github账号
2.准备node环境
3.了解一下commander模块与inquirer模块
4.在自己的github提前创建好项目模板

现在主流得cli脚本都是项目模板与cli执行脚本是分离得,
我们使用commader模块获取 cli 执行语句后面得参数,
(比如我得cli叫 dmh-cli, dmh-cli test ) commader可以很方便帮我们获取到test这个参数,
commader还有很多功能不一一解答,
然后inquirer是根据用户得喜好进行配置

本地测试需要创建一个软连接 npm link

最后可以通过npm pulish发布我们得cli

#!/usr/bin/env node

const path = require('path')
const { program } = require('commander')
const inquirer = require('inquirer')
const childProcess = require('child_process')

program
  .arguments('<dir>')
  .description('this is folder')
  .action(dir => {
    inquirer.prompt(
      [
        {
          type: 'list',
          name: 'framework',
          message: 'whick framework do you like',
          choices: [
            'vue',
            'react'
          ]
        }
      ]).then(answers => {
        const fullDir = path.resolve(process.cwd(), dir)
        let command = ''
        if (answers.framework === 'vue') {
          command = 'git clone http://xxx' + ' ' + fullDir
        } else {
          command = 'git clone http://xxx' + ' ' + fullDir
        }
        childProcess.execSync(command)
      })
  })

program.parse(process.argv)

package.json里面得配置要做下小改动, 添加一个bin可执行文件

{
  "name": "dmh-cli",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "bin": {
    "dmh-cli": "./index.js"
  },
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "commander": "^6.1.0",
    "inquirer": "^7.3.3"
  }
}