const Client = require('bitcoin-core');
const client = new Client({password: "123", username: "123", network: 'regtest', port: 18444 }); // Port was changed to 18444


client.getBlockHash(2) // For block number 2
  .then(data => client.getBlock(data))
  .then(data => client.getTransaction(data.tx[0]))
  .then(data => client.getTxOut(data.txid, 0, true))
  .then(data => console.log(data))
  .catch(err => console.log(err))

{ height: 111,
  bestblock: '1aabfd35913adf84f515f1cc2bdb897aeaf8f419e89d0c772a7e4d62632a33be',
  transactions: 111,
  txouts: 111,
  bytes_serialized: 7659,
  hash_serialized: '55ad9fd3a107feaa33cc6f7b41fc9fb4259ad9f1c88cce9c3e1947574fad68d3',
  total_amount: 5550 }
{ bestblock: '1aabfd35913adf84f515f1cc2bdb897aeaf8f419e89d0c772a7e4d62632a33be',
  confirmations: 110,
  value: 50,
  scriptPubKey:
   { asm: '0349bd218c6ee64537cccf9320b94e3340dda95e47c823ed2c6941161d91fb41ea OP_CHECKSIG',
     hex: '210349bd218c6ee64537cccf9320b94e3340dda95e47c823ed2c6941161d91fb41eaac',
     reqSigs: 1,
     type: 'pubkey',
     addresses: [ 'n1E6nKwEzLC6mRU8F2Axs27eJKn6fz8cWN' ] },
  version: 2,
  coinbase: true }