《前端那些事》从0到1开发简单脚手架

#!/usr/bin/env node
const fs = require('fs');
const path = require('path');
const chalk = require('chalk');
const commander = require('commander');
const inquirer = require('inquirer');
const checkDire = require('./utils/checkDire.js');
const { exec } = require('child_process');
const { version } = require('../package.json');
const { promptTypeList } = require('./config');
//version 版本号
commander.version(version, '-v, --version')
  .command('init <projectName>')
  .alias("i")
  .description("输入项目名称，初始化项目模版")
  .action(async (projectName,cmd) => {
    await checkDire(path.join(process.cwd(),projectName),projectName);   // 检测创建项目文件夹是否存在
    inquirer.prompt(promptTypeList).then(result => {
      const {url, gitName, val} = result.type;
      console.log("您选择的模版类型信息如下：" + val);
      console.log('项目初始化拷贝获取中...');
      if(!url){
        console.log(chalk.red(`${val} 该类型暂不支持...`));
        process.exit(1);
      }
      exec('git clone ' + url, function (error, stdout, stderr) {
        if (error !== null) {
          console.log(chalk.red(
            `clone fail,${error}`
          ));
          return;
        }
        fs.rename(gitName, projectName, (err)=>{
          if (err) {
            exec('rm -rf '+gitName, function (err, out) {});
            console.log(chalk.red(`The ${projectName} project template already exist`));
          } else {
            console.log(chalk.green(`The ${projectName} project template successfully create(项目模版创建成功)`));
          }
        });
      });
    })
  });
commander.parse(process.argv);

// utils/checkDire.js
const fs = require('fs');
const chalk = require('chalk');
const path = require('path');
module.exports = function (dir,name) {
  let isExists = fs.existsSync(dir);
  if (isExists) {
    console.log(chalk.red(
      `The ${name} project already exists in  directory. Please try to use another projectName`
    ));
    process.exit(1);
  }

// config/index.js
配置文件
/*
  @dest: 使用配置文件
  @Author: tree
 */
module.exports  = {
  promptTypeList:[{
      type: 'list',
      message: '请选择拉取的模版类型:',
      name: 'type',
      choices: [{
        name: 'mobile',
        value: {
          url: '',
          gitName: 'vue-web-template',
          val:'移动端模版'
        }
      },{
        name: 'pc',
        value: {
          url: 'https://github.com/littleTreeme/vue-web-template.git',
          gitName: 'vue-web-template',
          val:'PC端模版'
        }
      }]
  }],
};

const inquirer = require('inquirer');
const promptList = [
     type: 'list',
     message: '请选择拉取的模版类型:',
     name: 'type',
      choices: ['mobile','pc']
];
inquirer.prompt(promptList).then(type => {
    console.log(type); // 返回 mobile 或 pc
})

const commander = require('commander');
commander.version(version, '-v, --version')
  .command('init <projectName>') 
  .alias("i") 
  .description("输入项目名称，初始化项目模版") 
  .action(async (projectName,cmd) => {
      console.log(projectName,'你输入的<projectName>')
  })
commander.parse(process.argv);
// command – 定义命令行指令，后面可跟上一个name，用空格隔开
// alias – 定义一个更短的命令行指令
// description – 描述，它会在help里面展示
// option – 定义参数
// action – 注册一个callback函数
// parse - 解析命令行

const chalk = require('chalk');
// 报错日志用红色来显示
chalk.red(`The project already exists in  directory. Please try to use another projectName`));
// 成功日志用绿色来显示
chalk.green(`The project template successfully create(项目模版创建成功)`);

// package.json
"bin": {
    "kdv-cli": "./bin/index.js"
 },