irc-tx-summary

irc-tx-summary

replay a historical tx using a webu 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> }