npm install commander

#!/usr/bin/env node   
//下面正常的node代碼，比如我們需要配置的命令
console.log('自定義命令執(zhí)行了")

{
  "name": "gnip-cli",
  "version": "1.0.4",
  "description": "gnip-cli",
  "main": "index.js",
  //這里將我們?nèi)中枰獔?zhí)行的命令放到這里，當(dāng)我們npm下載時(shí)候，會(huì)自動(dòng)加到環(huán)境變量中（然后你就可以通過(guò) gnip xxx使用你的命令了）
  "bin": {
    "gnip": "./index.js"
  },
  "scripts": {},
  "keywords": [
    "cli"
  ],
  "author": "gnip",
  "license": "ISC",
  "devDependencies": {
    "commander": "^9.4.0",
    "download-git-repo": "^3.0.2"
  },
  "dependencies": {
    "ejs": "^3.1.8",
    "inquirer": "^7.3.3"
  },
  "files": [
    "node_modules",
    "lib",
    "*"
  ]
}

//index.js
const program = require("commander");
  program
  //-g表示參數(shù)，比如:gnip -g,第二個(gè)參數(shù)為當(dāng)前選項(xiàng)描述后面可以不接參數(shù)
    .option("-g", "a gnip cli")
    //-d是簡(jiǎn)寫，--dest 是全稱，<dest>標(biāo)書參數(shù)名，必填，因此你的命令可以是 gnip -d 哈哈或者gnip --dest 哈哈
    .option("-d, --dest <dest>", "a destion folder,例如：-d /src/components")
    //同上
    .option("-f, --framework <framework>", "your framework,such as vue react")
    //鏈?zhǔn)秸{(diào)用解析參數(shù)
    .parse();
  // 監(jiān)聽option對(duì)象的變化,做出回應(yīng)
  const options = program.opts();//獲取配置參數(shù)對(duì)象
  if (options.g) {
    console.log("a gnip cli");
  } else if (options.dest) {
    console.log("a destion folder,例如：-d /src/components");
  } else if (options.framework) {
    console.log("your framework,such as vue react");
  }

    const program = require("commander");
       // 創(chuàng)建工程項(xiàng)目，例如：gnip create demon01
    program
        .command("create <projectName>")
        .description("clone a repository from remote")
        .action(()=>{
        //當(dāng)用戶通過(guò) gnip create demon01回車的時(shí)候就會(huì)執(zhí)行這個(gè)回調(diào)，這里你可以讀寫文件，下載項(xiàng)目模板，克隆遠(yuǎn)程倉(cāng)庫(kù)，下載包等等
        })