namae/api/services/domain.js

import whois from 'whois-json'
const { send, sendError } = require('../util/http')

module.exports = async (req, res) => {
  const { query } = req.query

  if (!query) {
    return sendError(res, new Error('no query given'))
  }

  try {
    const response = await whois(query, { follow: 3, verbose: true })
    const availability = response[0].data.domainName ? false : true
    send(res, { availability })
  } catch (err) {
    sendError(res, err)
  }
}