translate.js

const fs = require('fs')
const exec = require('child_process').execSync

// SUMMARY:
// This simple script uses gtranslate npm cli tool to translate an input file
// of countries in json format to another format with translated country names
// the expected input would be [ { "country": "name" } ]

let inputCountries = JSON.parse(fs.readFileSync('countries.json'))

function translate (term) {
  return exec(`gtranslate --brief --source en --target es ${term}`).toString().trim()
}

// you can use inputCountries.slice(1, 5) to restrict how many entries to translate
var outputCountries = inputCountries.map(country => {
  return {
    name: country.country,
    translation: translate(country.country)
  }
})

process.stdout.write(JSON.stringify(outputCountries))