Convert big number (hex value) to a string or number

Question

I got this result from calling to a method in a ERC20 token I have deployed on a testnet.

contract MyToken is ERC20, ReentrancyGuard {}

calling method,

 let value = await ptrToken.balanceOf(wallet.address)

I want to convert the resultant big number to a string or number.

BigNumber { _hex: '0x021e19e0c9bab2400000', _isBigNumber: true }

I have tried the following three ways but, resulted 'undefined' as the output in nodejs.

1) const toEther = (_n) => {
    ethers.utils.formatUnits(_n, 'ether')
}

2) toTokens = (_n) => {
    ethers.utils.formatEther(_n)
}
3) const toEther = (_n) => {
    ethers.utils.formatUnits(_n.toString(), 'ether')
}

Passing the value to _n in both above functions resulted 'undefined'

functions return: BigNumber { _hex: '0x021e19e0c9bab2400000', _isBigNumber: true } as the result. — DeFi, Sep 14 '22 at 15:23
I want to convert the resulting BigNumber (hex value) to a string or a number. — DeFi, Sep 14 '22 at 15:25
They return `undefined` because you are missing a `return` statement (or you have superfluous `{ }`). — CherryDT, Sep 14 '22 at 15:27
They do not return any thing as the first commenter points out. My silly mistake :-). — DeFi, Sep 14 '22 at 15:29
So is there still a question, or will you delete the question? — trincot, Sep 14 '22 at 15:30
Does this answer your question? [Why is my arrow function returning \`undefined\`?](https://stackoverflow.com/questions/73720021/why-is-my-arrow-function-returning-undefined) — CherryDT, Sep 14 '22 at 16:09
You should see a question whether the question I just linked solved your problem. If you click "yes", this question will be closed. — CherryDT, Sep 14 '22 at 16:09

score 2 · Answer 1 · answered Oct 11 '22 at 12:35

Try this

const theUsedAccount = await provider.send("eth_requestAccounts", [0]);
const balance =  await provider.getBalance(theUsedAccount[0])
console.log("account used",theUsedAccount)
console.log("balance",ethers.utils.formatEther(parseInt(balance._hex).toString()))

score 1 · Answer 2 · answered Oct 11 '22 at 12:47

1

Can't you use BigInt ?

let bigVal = BigInt(value._hex);

//bigVal + 1n;
//bigVal > Number.MAX_SAFE_INTEGER

You can do all the normal comparisons.

answered Oct 11 '22 at 12:47

ibrahim tanyalcin

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Convert big number (hex value) to a string or number

2 Answers2