const epocthaAPI = require('epochta-client');

const keys = {
  publicKey: 'your public API key',
  privateKey: 'your private API key',
};

const client = epocthaAPI(keys);

client.sendSMS({
  sender: 'senderName',
  text: 'Some text',
  phone: 'some phone number'
})
  .then(function(result) {
    // process result
  })
  .catch(function(error) {
    // process error
  });