import { TonClient, WalletContractV4, internal } from "@ton/ton";
import { mnemonicNew, mnemonicToPrivateKey } from "@ton/crypto";

// Create Client
const client = new TonClient({
  endpoint: 'https://toncenter.com/api/v2/jsonRPC',
});

// Generate new key
const mnemonic = await mnemonicNew();
const keyPair = await mnemonicToPrivateKey(mnemonic);

// Create wallet contract
const wallet = WalletContractV4.create({
  workchain: 0, // basechain
  publicKey: keyPair.publicKey,
});
const contract = client.open(wallet);

// Get balance
const balance = await contract.getBalance();

// Create a transfer
const seqno = await contract.getSeqno();
const transfer = await contract.createTransfer({
  seqno,
  secretKey: keyPair.secretKey,
  messages: [internal({
    value: '1.5',
    to: 'EQCD39VS5jcptHL8vMjEXrzGaRcCVYto7HUn4bpAOg8xqB2N',
    body: 'Hello world',
  })]
});