const {RippleAPI} = require('ripple-lib')

const api = new RippleAPI({
  server: 'wss://s1.ripple.com' // Public rippled server
})
api.on('error', (errorCode, errorMessage) => {
  console.log(errorCode + ': ' + errorMessage)
})

const issuing_address = 'rUpy3eEg8rqjqfUoLeBnZkscbKbFsKXC3v'
const issuing_secret = 'snnDVkSW3aV6jvMJTPdCiE2Qxv1RW'
    // Best practice: get your secret from an encrypted
    //  config file instead

api.connect().then(() => {

  // Prepare a settings transaction to enable no freeze
  const settings = {
    'noFreeze': true
  }

  console.log('preparing settings transaction for account:',
              issuing_address)
  return api.prepareSettings(issuing_address, settings)

}).then(prepared_tx => {

  // Sign and submit the settings transaction
  console.log('signing tx:', prepared_tx.txJSON)
  const signed1 = api.sign(prepared_tx.txJSON, issuing_secret)
  console.log('submitting tx:', signed1.id)

  return api.submit(signed1.signedTransaction)
}).then(() => {
  return api.disconnect()
}).catch(console.error)