node.js 设置脚本命令

yargs模块 https://www.npmjs.com/package/yargs https://github.com/yargs/yargs/blob/HEAD/docs/api.md

const { argv } = require('yargs');

console.log(argv);

>cui 123 ajanuw -p=./

{ _: [ 123, 'ajanuw' ],

  help: false,

  version: false,

  p: './',

  '$0': 'AppData\\Roaming\\npm\\node_modules\\sh\\bin\\create-user-info.js' }

脚本文件 /bin/main.js

#!/usr/bin/env node

console.log(123);

package.json

{

  "name": "sh",

  "version": "1.0.0",

  "description": "",

  "main": "main.js",

  "scripts": {

    "test": "echo \"Error: no test specified\" && exit 1"

  },

  "author": "",

  "license": "ISC",

  "bin": {

    "r32": "./bin/main.js"

  }

}

这是一个返回 随机数的命令

#!/usr/bin/env node

const {

  argv

} = require('yargs')

  .config({

    s: 'c0'

  })

  .option('all', {

    describe: '查看返回字符串类型'

  })

  .alias('v', 'version')

  .help('help')

if (argv.version) {

  console.log('1.0.0');

  return;

}

if (argv.all) {

  console.log(`

    --s=c0  默认返回大小写字母和数字 [c1 全大写] [c2 全小写] [c3 全小写]

  `);

  return;

}

let len = argv._[0] && typeof + argv._[0] === "number" ?

  +argv._[0] :

  32

const c0 = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678'; // 大小写字母和数字

const c1 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'; // 大写

const c2 = 'abcdefghijklmnopqrstuvwxyz'; // 小写

const c3 = '123456789'; // 小写

let c = argv.s; // 默认大小写数字

switch (c) {

  case 'c1':

    c = c1;

    break;

  case 'c2':

    c = c2;

    break;

  case 'c3':

    c = c3;

    break;

  default:

    c = c0;

    break;

}

const random = (a, b) => Math.floor(Math.random() * (b - a + 1) + a);

function randomString32(len, c) {

  // 返回随机字符串

  const c_len = c.length;

  return new Array(len)

    .fill()

    .reduce((acc) => acc += c[random(0, c_len - 1)], '')

}

const str = randomString32(len, c);

const exec = require('child_process').exec ;

exec(`echo ${str} | clip`, (error, stdout, stderr)=>{

  if(error) console.log('复制到粘贴板失败!');

})

console.log(str);

>node .\bin\main.js 6 --s=c3

842773