> const {ethers} = require("ethers")
undefined

> let lprovider = new ethers.JsonRpcProvider("{rpc_url}")
undefined

> xtx = await lprovider.getTransactionReceipt("0x9dc6cb141309195c0da18f61c618625a447421a9a775092d8ecbd128c7a3cad5")

Can get index from Transaction Receipt

TransactionReceipt {
  provider: JsonRpcProvider {},
  to: '0x67d58E608d9FE526F4e17b62fbF4460e9173C651',
  from: '0xa4C1aE0fed00e02dcb490145d844Bb529B927711',
  contractAddress: null,
  hash: '0x9dc6cb141309195c0da18f61c618625a447421a9a775092d8ecbd128c7a3cad5',


  index: 4, <<< LOOK HERE


  blockHash: '0x62821b1549a9193a7cb35b938afef9e97bd893746e52687525a1300cf6efe19f',
  blockNumber: 179911030,
  logsBloom: '0x00000000000020000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040000000000000000080000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',
  gasUsed: 1334979n,
  blobGasUsed: null,
  cumulativeGasUsed: 5440693n,
  gasPrice: 100000000n,
  blobGasPrice: null,
  type: 2,
  status: 1,
  root: undefined
}

Can't get index from TransactionResponse 

> tx = await lprovider.getTransaction("0x9dc6cb141309195c0da18f61c618625a447421a9a775092d8ecbd128c7a3cad5")
TransactionResponse {
  provider: JsonRpcProvider {},
  blockNumber: 179911030,
  blockHash: '0x62821b1549a9193a7cb35b938afef9e97bd893746e52687525a1300cf6efe19f',

  index: undefined, <<<<< LOOK HERE

  hash: '0x9dc6cb141309195c0da18f61c618625a447421a9a775092d8ecbd128c7a3cad5',
  type: 2,
  to: '0x67d58E608d9FE526F4e17b62fbF4460e9173C651',
  from: '0xa4C1aE0fed00e02dcb490145d844Bb529B927711',
  nonce: 7092,
  gasLimit: 2204742n,
  gasPrice: 100000000n,
  maxPriorityFeePerGas: 0n,
  maxFeePerGas: 200000000n,
  maxFeePerBlobGas: null,
  data: '0x1d8557d7',
  value: 0n,
  chainId: 42161n,
  signature: Signature { r: "0x356c09b53335862a13bb5883e3ef7aca843d45667c989acd0b6f3e730c926cab", s: "0x2c40989438df9da1f4607bbe954fb6f924afcc3761f506c9c79cae7a265c953a", yParity: 1, networkV: null },
  accessList: [],
  blobVersionedHashes: null
}