Sends a raw transaction with web3 v1.2.2, ethereumjs-tx v2.1.1, and Infura

sendRawTransaction.js

const Web3 = require('web3')
const Tx = require('ethereumjs-tx').Transaction

// connect to Infura node
const web3 = new Web3(new Web3.providers.HttpProvider('https://mainnet.infura.io/INFURA_KEY'))

// the address that will send the test transaction
const addressFrom = '0x1889EF49cDBaad420EB4D6f04066CA4093088Bbd'
const privateKey = new Buffer('PRIVATE_KEY', 'hex')

// the destination address
const addressTo = '0x1463500476a3ADDa33ef1dF530063fE126203186'

// construct the transaction data
// NOTE: property 'nonce' must be merged in from web3.eth.getTransactionCount 
// before the transaction data is passed to new Tx(); see sendRawTransaction below.
const txData = {
  gasLimit: web3.utils.toHex(25000),
  gasPrice: web3.utils.toHex(10e9), // 10 Gwei
  to: addressTo,
  from: addressFrom,
  value: web3.utils.toHex(web3.utils.toWei('123', 'wei')) // thanks @abel30567
  // if you want to send raw data (e.g. contract execution) rather than sending tokens,
  // use 'data' instead of 'value' (thanks @AlecZadikian9001)
  // e.g. myContract.methods.myMethod(123).encodeABI() (thanks @NguyenHoangSon96)
}

/** Signs the given transaction data and sends it. Abstracts some of the details of 
  * buffering and serializing the transaction for web3.
  * @returns A promise of an object that emits events: transactionHash, receipt, confirmaton, error
*/
const sendRawTransaction = txData =>
  // get the number of transactions sent so far so we can create a fresh nonce
  web3.eth.getTransactionCount(addressFrom).then(txCount => {
    const newNonce = web3.utils.toHex(txCount)
    const transaction = new Tx({ ...txData, nonce: newNonce }, { chain: 'mainnet' }) // or 'rinkeby'
    transaction.sign(privateKey)
    const serializedTx = transaction.serialize().toString('hex')
    return web3.eth.sendSignedTransaction('0x' + serializedTx)
  })


// fire away!
// (thanks @AndreiD)
sendRawTransaction(txData).then(result =>
  result
    .on('transactionHash', txHash => {
      console.log('transactionHash:', txHash)
    })
    .on('receipt', receipt => {
      console.log('receipt:', receipt)
    })
    .on('confirmation', (confirmationNumber, receipt) => {
      if (confirmationNumber >= 1) {
        console.log('confirmations:', confirmationNumber, receipt)
      }
    })
    .on('error:', error => {
      console.error(error)
    })
)

I've been gettinig an error UnhandledPromiseRejectionWarning: TypeError: Tx is not a constructor with the latest version of ethereumjs-tx package until I updated the line 2 to: const Tx = require('ethereumjs-tx').Transaction

@Aldekein Thanks! Updated. What version of web3 are you using btw?

Would it be possible to see an example with a contract deployment as the transaction? Thanks!

updated version of this script. https://gist.github.com/AndreiD/675027abdaa885716ce2c5af16166510

Updated from @AndreiD's script. If someone could confirm that the updated gist works for them, that would be great.

Thank you @AlecZadikian9001 for the tip. Updated with comment.

Thanks @abel30567. Updated.

Hello, i get an error sendRawTransaction(txData).then(result =>
^

TypeError: Cannot read property 'then' of undefined

@EffMining What version of web3 are you on?

Encountered the same error as @EffMining, use web3 v1.2.2, ethereumjs-tx v2.1.1.
Also got error

function sendRawTransaction(txData) =>
                                   ^^
SyntaxError: Unexpected token =>```

@simplespy Sorry, that should be: const sendRawTransaction = txData =>

I am getting such an unhelpful error:
Error: Returned error: VM Exception while processing transaction: revert

It is driving me crazy. Does anyone have any ideas why this could be failing?

transactionData = myContract.methods.foo('bar');
gasPrice = await web3.eth.getGasPrice();
account = web3.eth.accounts.privateKeyToAccount(privateKey);
txCount = await web3.eth.getTransactionCount(account.address, 'pending');

rawTx = {
    nonce: web3.utils.toHex(txCount),
    gasLimit: web3.utils.toHex('800000'),
    gasPrice: web3.utils.toHex(gasPrice),
    to: smartContractAddressTreasury,
    value: fee,
    data: transactionData,
};

@acidic9 It's probably an error in smartContractAddressTreasury. Either it is a bug, or you may be passing the wrong data or in the wrong format.

@acidic9 I think you forget to encode the data like so transactionData.encodeABI()

Thanks guys. I think the issue was just that my gas limit was too low :/

I get the following error when trying to send a transaction over the kovan test network

error Error: Returned error: Invalid chain id.
    at Object.ErrorResponse (/Users/laurenswissels/node_modules/web3-core-helpers/lib/errors.js:28:19)
    at /Users/laurenswissels/node_modules/web3-core-requestmanager/lib/index.js:288:36
    at XMLHttpRequest.request.onreadystatechange (/Users/laurenswissels/node_modules/web3-providers-http/lib/index.js:98:13)
    at XMLHttpRequestEventTarget.dispatchEvent (/Users/laurenswissels/node_modules/xhr2-cookies/xml-http-request-event-target.ts:44:13)
    at XMLHttpRequest._setReadyState (/Users/laurenswissels/node_modules/xhr2-cookies/xml-http-request.ts:219:8)
    at XMLHttpRequest._onHttpResponseEnd (/Users/laurenswissels/node_modules/xhr2-cookies/xml-http-request.ts:345:8)
    at IncomingMessage.<anonymous> (/Users/laurenswissels/node_modules/xhr2-cookies/xml-http-request.ts:311:39)
    at IncomingMessage.emit (events.js:327:22)
    at endReadableNT (_stream_readable.js:1220:12)
    at processTicksAndRejections (internal/process/task_queues.js:84:21) {
  data: null
}