Node.js Ledger Nano S Ethereum sign transaction and broadcast

sign_send_transaction.js

const Transport = require('@ledgerhq/hw-transport-node-hid').default
const AppEth = require('@ledgerhq/hw-app-eth').default
const Tx = require('ethereumjs-tx')
const Web3 = require('web3')
const web3 = new Web3('https://mainnet.infura.io:443')

async function main() {
  const index = 1
  const devices = await Transport.list()
  if (devices.length === 0) throw 'no device'
  const transport = await Transport.create()
  const eth = new AppEth(transport)

  const txData = {
    nonce: web3.utils.toHex(0),
    gasLimit: web3.utils.toHex(21000),
    gasPrice: web3.utils.toHex(20e9), // 20 Gwei
    to: '0x541Ef339F71d15C9401F50e0e2b1632A276e67Ee',
    from: '0x08437Bc9E3C317f9c00b584fF8D29a8EF0A2783E',
    value: web3.utils.toHex(web3.utils.toWei(web3.utils.toBN(1), 'ether')), // 1 eth
    chainId: 1,
    // these are required!
    v: '0x01', // chain id
    r: '0x00',
    s: '0x00'
  }

  const tx = new Tx(txData)
  const serializedTx = tx.serialize().toString('hex')
  const sig = await eth.signTransaction(`44'/60'/0'/${index}`, serializedTx)
  txData.v = '0x' + sig.v
  txData.r = '0x' + sig.r
  txData.s = '0x' + sig.s

  const signedTx = new Tx(txData)
  const signedSerializedTx = signedTx.serialize().toString('hex')
  const txHash = await web3.eth.sendSignedTransaction('0x' + signedSerializedTx)
  console.log(txHash)
}

main()