index.js

#!/usr/bin/env node



const { program } = require('commander');
const inquirer = require('inquirer');


program
  .option('-d, --debug', 'output extra debugging')
  .option('-s, --small', 'small pizza size')
  .option('-p, --pizza-type <type>', 'flavour of pizza');

program.parse(process.argv);

inquirer.prompt([{
  name: 'name',
  type: 'input',
  message: 'What\'s your name?',
}, {
  name: 'iceCream',
  type: 'list',
  message: 'Which is your favorite of the following ice cream flavors?',
  choices: ['green tea', 'poppyseed jam', 'chile', 'vanilla'],
  default: 3,
}]).then((answers) => {
  console.log(`\nHi ${answers.name}. I like ${answers.iceCream} ice cream too! 😋\n`);
});

if (program.debug) console.log(program.opts());
console.log('pizza details:');
if (program.small) console.log('- small pizza size');
if (program.pizzaType) console.log(`- ${program.pizzaType}`);

package.json

{
  "name": "test",
  "version": "1.0.0",
  "description": "test",
  "bin": "./index.js",
  "dependencies": {
    "commander": "5.1.0",
    "inquirer": "7.3.2"
  }
}