背景需求：在日常开发中，随着项目越来越多，能重复利用的代码就越多，急需一套基本的模板来初始化项目，把代码放到自己的gitlab或github上，每次又得找到地址重新clone一下，很麻烦
期望的结果：XXX init 。。。一行命令解决
步骤：
1、申请一个npm账号，https://www.npmjs.com/
2、写一个npm项目
package.json:

    {
  "name": "windssr",
  "version": "1.0.8",
  "description": "a tool service for react-ssr",
  "main": "index.js",
  "bin": {
    "windssr": "index.js"
  },
  "author": "windseek",
  "license": "ISC",
  "dependencies": {
    "chalk": "^2.4.2",
    "co": "^4.6.0",
    "co-prompt": "^1.0.0",
    "commander": "^2.20.0"
  },
  "scripts": {
    "test": "test"
  },
  "repository": {
    "type": "git",
    "url": "git+https://github.com/Windseek/react-ssr-cli.git"
  },
  "keywords": [
    "react",
    "react-ssr",
    "wind-ssr",
    "react-ssr-cli"
  ],
  "bugs": {
    "url": "https://github.com/Windseek/react-ssr-cli/issues"
  },
  "homepage": "https://github.com/Windseek/react-ssr-cli#readme"
}

init.js

'use strict'
const exec = require('child_process').exec
const co = require('co')
const prompt = require('co-prompt')
const config = require('./template.json')
const chalk = require('chalk')

module.exports = () => {
 co(function *() {
    // 处理用户输入
      let tplName = yield prompt('Template name (you can input one like react, vue, angular): ')
      let projectName = yield prompt('Project name: ')
      let gitUrl,branch;
      console.log(config.tpl);
    if (!config.tpl[tplName]) {
        console.log(chalk.red('\n × Template does not support!'))
        process.exit()
    }
    gitUrl = config.tpl[tplName].url
    branch = config.tpl[tplName].branch

    // git命令，远程拉取项目并自定义项目名
    let cmdStr = `git clone ${gitUrl} ${projectName} && cd ${projectName} && git checkout ${branch}`

    exec(cmdStr, (error, stdout, stderr) => {
      if (error) {
        console.log(error)
        process.exit()
      }
      console.log(chalk.green('\n √ Generation completed!'))
      console.log(`\n cd ${projectName} && npm install \n`)
      process.exit()
    })
  })
}

index.js

#!/usr/bin/env node --harmony

'use strict'

process.env.NODE_PATH = __dirname + '/../node_modules/'

const program = require('commander')

program
    .version(require('./package').version)

program
    .usage('<command>')
program
    .command('init')
    .description('Generate a new project')
    .alias('i')
    .action(() => {
        require('./init.js')()
    })

program.parse(process.argv)

template.json:

{"tpl":{"react":{"url":"https://github.com/Windseek/reactssr.git","branch":"master"}}}

写好了需要发布一下喽：
1、npm login，填写用户名，密码
2、修改package.json里version
3、npm publish
4、去https://www.npmjs.com/ 上看看成功没有

相关说明：
1、package.json里定义bin的位置
2、index里定义bin命令指定执行的代码
3、init里执行shell，去git上拿代码模板

安装和初始化：
1、npm install windssr -g
2、windssr init
3、选择要使用的模板，react，angular和vue

如果觉的对你有用的话，支持一下哈