Example showing how to get tx info from tx hash using ethers.js

transactionDetails.ts

// Example showing how to get tx info from tx hash using ethers.js
// Add .env file with INFURA key. Free key from: https://infura.io/
require('dotenv').config();
import { JsonRpcProvider } from '@ethersproject/providers';
import { Interface } from '@ethersproject/abi';

async function getTransactionDetails(){

  let txHash = `0x4b55c0b756dbfbcd997e94b98698241299d16d5297cd17aa463d280d215a1f52`;  // Example tx hash from Etherscan

  console.log(`getTransactionDetails: ${txHash}`);

  const provider = new JsonRpcProvider(
      `https://mainnet.infura.io/v3/${process.env.INFURA}` // If running this example make sure you have a .env file saved in root DIR with INFURA=your_key
  );

  let tx = await provider.getTransaction(txHash);

  // console.log(tx);      // Have a look at this to get familiar with what it shows

  const proxyArtifact = require('./abi/ExchangeProxy.json');

  const iface = new Interface(proxyArtifact.abi);

  const txParsed = iface.parseTransaction({ data: tx.data });
  console.log(txParsed.args.swapSequences);       // Start looking at parsing the pools used from this. Some will have a single pool others will have multipool so check both work ok.
  console.log(txParsed.functionFragment.name);    // i.e. multihopBatchSwapExactOut
}

getTransactionDetails();