index.js

var inquirer = require('inquirer');
var fetch = require('isomorphic-unfetch');

console.log('👋🏽 Saturday Hacks! Enter details to reserve your spot:');
inquirer
  .prompt([
    {
      type: 'input',
      name: 'name',
      message: 'Hey there! Enter your name:',
      default: 'John Doe'
    },
    {
      type: 'input',
      name: 'emailid',
      message: 'And now your Email id:',
      default: '[email protected]'
    },
  ])
  .then(answers => {
    // Use user feedback for... whatever!!
    console.log(JSON.stringify(answers, null, '  '));
    fetch('https://api.emailapi.io/box_f09c124ecade935991f6/users', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({answers})
    }).then( r => {
      // console.log(r.headers.get('location'));
      console.log('You\'ve successfully reserved your spot!');
      return r.json();
    })

  })
  .catch(error => {
    if(error.isTtyError) {
      // Prompt couldn't be rendered in the current environment
    } else {
      // Something else when wrong
    }
  });

package.json

{
  "name": "saturday-hacks-registration",
  "version": "0.0.0",
  "bin": "./index.js",
  "dependencies": {
    "inquirer": "^7.1.0",
    "isomorphic-unfetch": "^3.0.0"
  }
}