eth-tx-summary

eth-tx-summary

replay a historical tx using a web3 provider as a data source

generateTxSummary(provider, targetTx, function(err, summary){
  if (err) throw err
 
  summary.codePath.forEach(function(step, index){
    var stepNumber = index+1
    console.log(`[${stepNumber}] ${step.pc}: ${step.opcode.name}`)
  })
  console.log(summary.results)
 
})

outputs

[1] 0: PUSH1
[2] 2: PUSH1
[3] 4: MSTORE
[4] 5: CALLDATASIZE
[5] 6: ISZERO
[6] 7: PUSH2
[7] 10: JUMPI
[8] 11: PUSH1
[9] 13: PUSH1
[10] 15: EXP
[11] 16: PUSH1
[12] 18: CALLDATALOAD
[13] 19: DIV
...
[322] 3776: ISZERO
[323] 3777: PUSH2
[324] 3780: JUMPI
[325] 3781: PUSH2
[326] 3784: JUMP
{ gasUsed: <BN: 249f0>,
  createdAddress: undefined,
  vm: 
   { suicides: {},
     suicideTo: undefined,
     exception: 0,
     exceptionError: 'invalid JUMP',
     logs: [],
     gas: <BN: 1ef27>,
     return: <Buffer >,
     gasUsed: <BN: 1f598> },
  bloom: { bitvector: <Buffer 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ... > },
  amountSpent: <BN: b30e8870ae000> }