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I am trying to query the balance of an address of a contract I deployed to a localhost and keep running into this error. I know in Js once you declare a const variable you cannot re declare it but in this instance I was not able to define the variable balance so how would I go about getting to where I want i.e attempting to run const balance = await ethers.provider.getBalance(accounts[0].address) ?

Any help would be very appreciated :)

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2 Answers 2

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Well you are not passing a valid address, like said in the error! [0] is not an address.

invalid addressor ENS name 'argument="name, value=[0], code=INVALID_ARGUMENT ...

Maybe refer to an array that holds the address you're looking for ? Also with ether.js you can define addresses on the local network like this:

const [owner, acc1, acc2, acc3] = await ethers.getSigners();

try changing it to:

let balance = await ethers.provider.getBalance(acc1.address)
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  • Thanks Torof. Do you have any advice on the Syntax error? Even once changed to let balance = await ethers.provider.getBalance(acc1.address) as you suggested it still throws Uncaught SyntaxError: Identifier 'balance' has already been declared
    – Wattlebird
    Commented Nov 21, 2022 at 15:48
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Try this, it might work

await provider.send("eth_requestAccounts", []);
const signer = provider.getSigner()

let balance = await signer.getBalance();
balance = ethers.utils.formatEther(balance)

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