Building a CLI application with Node.js - 2

#!/usr/bin/env node

const prompt = require('prompt-sync')({ sigint: true })
const low = require('lowdb')
const FileSync = require('lowdb/adapters/FileSync')
const adapter = new FileSync('commandos.json')
const db = low(adapter)
const { exec } = require('child_process')

// Set some defaults (required if your JSON file is empty)
db.defaults({ commandos: [] }).write()

var args = process.argv.slice(2)

switch (args[0]) {
  case 'create':
    create()
    break
  case 'all':
    all()
    break
  case 'get':
    get(args[1])
    break
  default:
    execute(args[0])
}

function create() {
  const fullCommand = prompt('Enter a full commando :')
  const shortCommand = prompt('Enter a short commando :')
  // Add a command
  db.get('commandos')
    .push({
      fullCommand: fullCommand,
      shortCommand: shortCommand,
    })
    .write()
  console.log('new short command added! : ' + shortCommand)
}

function all() {
  const result = db.get('commandos').value()
  console.log(result)
}

function get(command) {
  const result = db.get('commandos').find({ shortCommand: command }).value()
  console.log(result)
}

function execute(command) {
  const result = db.get('commandos').find({ shortCommand: command }).value()
  if (result === undefined) console.log('There is no predefined commando called : ' + command)
  else {
    exec(result.fullCommand, (error, stdout, stderr) => {
      if (error) {
        console.log(`error: ${error.message}`)
        return
      }
      if (stderr) {
        console.log(`stderr: ${stderr}`)
        return
      }
      console.log(stdout)
    })
  }
}