Format of ABI when listening to an event?

[marsrobertson]

When initialising contract, I use the following syntax:

const BaseXContract = new ethers.Contract(ADDRESS, ABI, provider);

And it is working fine, I can read data from the contract.

BUT the listening to the event, it is not working: BaseXContract.on("ItemAdded", async (eventData) => { ...

So I've asked ChatGPT to help me...

AI generated snippet to try things out...

const ethers = require("ethers");

const usdtContractAddress = "0xdAC17F958D2ee523a2206206994597C13D831ec7";
const provider = new ethers.providers.InfuraProvider(
	"mainnet",
	process.env.INFURA_KEY
);

async function listenForTransfers() {
  // const provider = new ethers.providers.JsonRpcProvider(ethereumNodeUrl);

  const usdtContract = new ethers.Contract(
    usdtContractAddress,
    [
      "event Transfer(address indexed from, address indexed to, uint256 value)",
    ],
    provider
  );

  usdtContract.on("Transfer", (from, to, value, event) => {
    console.log(`Transfer from ${from} to ${to}, Value: ${value.toString()}`);
  });
}

listenForTransfers()
  .then(() => console.log("Listening for USDT transfers..."))
  .catch((error) => console.error("Error:", error));

In this snippet I've noticed the syntax: "event Transfer(address indexed from, address indexed to, uint256 value)"

So I went to my code and changed how I instantiate the contract to follow the working example:

  const BaseXContract = new ethers.Contract(ADDRESS, 
    [
        "event ItemAdded(string indexed orgGuid, string orgName, string indexed itemGuid, string itemJSONIPFS)"
    ]
    , provider);

Now it works

I don't want to instantiate contract twice.

I would like to keep the way how I instantiate the contract using the following ABI syntax:

But then it will not listen to events. Any ideas?

Using node.js and ethers v5.6

[marsrobertson]

Bump... I'm revisiting this area of code and it stil makes me wonder?