Working on keeping eth balances via erigon trace api

trace.js

// NOTICE NOTHING SPECIAL NOR PRETTY JUST EXAMPLE HACKING AT PRESENT


const env = require('node-env-file')
env(__dirname + '/.env')
const ethers = require('ethers')

const { multiEth, decimals } = require('./utils')
const { d } = decimals
const provider = multiEth.getProvider('mainnet')

const stateDiffs = async (block) => {
  const req = await provider.getBlock(block)
  const miner = req.miner.toLowerCase()
  const req2 = await provider.send('trace_replayBlockTransactions', [block, ["stateDiff"]])
  req2.forEach((r, index) => {

    console.log(r.transactionHash)

    for (let dd in r.stateDiff) {

      // +, when we have a new entry in the state DB
      // * when existing data have changed in the state DB, providing the from (old) and the to (new) values
      // -, when we have a removal from the state DB
      // =, when the data remained the same.

      if (typeof r.stateDiff[dd].balance === 'object') {
        let txFee = ''
        if (dd === miner) {
          txFee = 'fee'
        }

        // + A new Entry in the state DB
        if (r.stateDiff[dd].balance['+']) {
          const f = ethers.BigNumber.from('0')
          const t = ethers.BigNumber.from(r.stateDiff[dd].balance['+'])
          const diff = d(t.sub(f).toString(), 18)
          const from = d(f.toString(), 18)
          const to = d(t.toString(), 18)
          console.log(dd + ' before: ' + from + ' after: ' + to + ' diff: ' + diff.toString() + ' ' + txFee)
        }

        // * existing data has changed in the state DB
        if (r.stateDiff[dd].balance['*']) {
          const f = ethers.BigNumber.from(r.stateDiff[dd].balance['*'].from)
          const t = ethers.BigNumber.from(r.stateDiff[dd].balance['*'].to)
          const diff = d(t.sub(f).toString(), 18)
          const from = d(f.toString(), 18)
          const to = d(t.toString(), 18)
          console.log(dd + ' before: ' + from + ' after: ' + to + ' diff: ' + diff.toString())
        }

        // Minuses mean the address no longer takes EVM space (or something similar) 
        if (r.stateDiff[dd].balance['-']) {
          // in this case need to zero existing balance of address
          const amount = ethers.BigNumber.from(r.stateDiff[dd].balance['-'])
          console.log(dd + ' before: ' + amount.toString() + ' after: 0 diff: ' + amount.mul(ethers.BigNumber.from('-1')).toString())
        }

        // Pretty sure this is nonexistant
        if (r.stateDiff[dd].balance['=']) {
          console.log(r.transactionHash)
          console.log('NoChange', r.stateDiff[dd].balance['='])
        }
        
      }
    }
    console.log()
  })
}

  ; (async () => {
    try {
      for (let i = 10000109; i < 10000110; i++) {
        console.log('Block: ' + i)
        await stateDiffs(i)
      }
    } catch (error) {
      console.log(error)
    }
    
  })()