index.js

const {
  Client,
  PrivateKey,
  AccountCreateTransaction,
  AccountBalanceQuery,
  Hbar,
  TransferTransaction,
} = require("@hashgraph/sdk");
require("dotenv").config();

async function environmentSetup() {
  //Grab your Hedera testnet account ID and private key from your .env file
  const myAccountId = process.env.MY_ACCOUNT_ID;
  const myPrivateKey = process.env.MY_PRIVATE_KEY;

  // If we weren't able to grab it, we should throw a new error
  if (!myAccountId || !myPrivateKey) {
    throw new Error(
      "Environment variables MY_ACCOUNT_ID and MY_PRIVATE_KEY must be present"
    );
  }

  //Create your Hedera Testnet client
  const client = Client.forTestnet();

  //Set your account as the client's operator
  client.setOperator(myAccountId, myPrivateKey);

  //Set the default maximum transaction fee (in Hbar)
  client.setDefaultMaxTransactionFee(new Hbar(100));

  //Set the maximum payment for queries (in Hbar)
  client.setMaxQueryPayment(new Hbar(50));

  //const client = Client.forTestnet();
  //client.setOperator(myAccountId, myPrivateKey);
  //-----------------------<enter code below>--------------------------------------

  //Create new keys
  const newAccountPrivateKey = PrivateKey.generateED25519();
  const newAccountPublicKey = newAccountPrivateKey.publicKey;

  //Create a new account with 1,000 tinybar starting balance
  const newAccount = await new AccountCreateTransaction()
    .setKey(newAccountPublicKey)
    .setInitialBalance(Hbar.fromTinybars(1000))
    .execute(client);

  // Get the new account ID
  const getReceipt = await newAccount.getReceipt(client);
  const newAccountId = getReceipt.accountId;

  //Log the account ID
  console.log("The new account ID is: " + newAccountId);

  //Verify the account balance
  const accountBalance = await new AccountBalanceQuery()
    .setAccountId(newAccountId)
    .execute(client);

  console.log(
    "The new account balance is: " +
      accountBalance.hbars.toTinybars() +
      " tinybar."
  );
}
environmentSetup();