1、得到process.argv 得到参数

2、修改hahaya1项目的index.js

#!/usr/bin/env node
module.exports = {
  sum(a, b) {
    return a + b + 1
  },
  init({ _option, param }) {
    console.log('执行命令', _option, param)
  }
}

3、引入init命令，并执行

#!/usr/bin/env node
const argv = require('process').argv
console.log(argv)
const lib = require('hahaya1')
console.log('sum', lib.sum(2, 3))
console.log('t2eswwt11')
const command = argv[2]
if (command) {
  if (lib[command]) {
    lib[command]()
  } else {
    console.log('command无效')
  }
} else {
  console.log('请输入command')
}

4、处理参数

...
//解析参数
const options = argv.splice(3)
console.log(options)
const [option, param] = options
console.log(option, param)
const _option = option.replace(/--/g, '')
const command = argv[2]
if (command) {
  if (lib[command]) {
    lib[command]({ _option, param })
  } else {
    console.log('command无效')
  }
} else {
  console.log('请输入command')
}

5、执行版本

#!/usr/bin/env node
const argv = require('process').argv
console.log(argv)
const lib = require('hahaya1')
console.log('sum', lib.sum(2, 3))
console.log('t2eswwt11')
const command = argv[2]
//解析参数
const options = argv.splice(3)
if (options.length) {
  console.log(options)
  const [option, param] = options
  console.log(option, param)
  const _option = option.replace(/--/g, '')
  if (command) {
    if (lib[command]) {
      lib[command]({ _option, param })
    } else {
      console.log('command无效')
    }
  } else {
    console.log('请输入command')
  }
}
if (command.startsWith('--') || command.startsWith('-')) {
  const gloabalOption = command.replace(/--|-/g, '')
  console.log(gloabalOption)
  if (gloabalOption === 'version' || gloabalOption === 'v') {
    console.log('1.0.0')
  }
}