Event capture does not work in ethers.js version 6

Smart Contracts
1

In our fronts, until version v5 of ethers.js we did it this way:

contract.on("TokenPurchase", (from, buyer, value, idToken) => {
			console.log(`The account ${buyer} has purchased the nft with id #${idToken}`);
			});

As I have researched this does not work in version 6. As discussed here:

it is recommended to downgrade to version 5.
The use of async is indifferent.

Do you know what is the new methodology in v6 to capture events in our fronts?

2

Hey, I did a quick test and this works:

const ethers = require("ethers");

const provider = ethers.getDefaultProvider();

const address = "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48"; // USDC
const abi = [
  {
    anonymous: false,
    inputs: [
      {
        indexed: true,
        internalType: "address",
        name: "owner",
        type: "address",
      },
      {
        indexed: true,
        internalType: "address",
        name: "spender",
        type: "address",
      },
      {
        indexed: false,
        internalType: "uint256",
        name: "value",
        type: "uint256",
      },
    ],
    name: "Approval",
    type: "event",
  },
];

const contract = new ethers.Contract(address, abi, provider);

contract.on("Approval", console.log);

I'm using ethers@6.7.1

4

It is very similar to how I do it but it does not work for me. Tomorrow I will see if there is any difference in the code.

my version is:": "^6.6.3"

5

hi @ernestognw .
The only essential difference with the code you have shared with me is the provider, do you think it can affect?

    const ethersProvider = new ethers.BrowserProvider(window.ethereum);
	const signer = await ethersProvider.getSigner();
	const contract = new ethers.Contract(contractAddress, ABI, signer);

static calls I make like this:

const customHttpProvider = new ethers.JsonRpcProvider(url);
	const provider = customHttpProvider;
	const contract = new ethers.Contract(contractAddress, ABI, provider);
6

I get back the address of the called contract but not the event info…
I have capture with static provider.