EtherscanProvider _getTransactionPostData has invalid TransactionOverrides

[Nakasar]

Ethers Version

6.13.14

Search Terms

Etherscan, maxFeePerGs, maxFeePerGas, transaction overrides

Describe the Problem

Hello!

When using transaction override property "maxFeePerGas", the following cast error is raised:

TypeError: invalid BytesLike value (argument="value", value=60000000015, code=INVALID_ARGUMENT, version=6.13.4)

The error occurs sometimes only (when using the getDefaultProvider). And everytimes when using the EtherscanProvider.

This seems to be caused by this check in EtherscanProvider: https://github.com/ethers-io/ethers.js/blob/48cdcef2925ffca4f60412697791dac268f06d0d/src.ts/providers/provider-etherscan.ts#L341C69-L341C80

Where the keys of the override properties are checked to defined if they need to be cast using toQuantity or hexlify.

In the list of properties keys maxFeePerGs is used instead of maxFeePerGas.

The line of properties to match for toQuantity should probably be:

if ((<any>{ type: true, gasLimit: true, gasPrice: true, maxFeePerGas: true, maxPriorityFeePerGas: true, nonce: true, value: true })[key]) {

Have a nice day!

Code Snippet

const etherscan = new ethers.EtherscanProvider('matic-amoy');
    
    const wallet = new ethers.Wallet('<>', etherscan);
    const signer = new ethers.NonceManager(wallet);

    const contract = new ethers.Contract('address', ["function someFunction(address old, address new)"], signer);

    const tx = await contract.someFunction('0x8701766278803a9b3460c78d8cb22df0ab132952', '0x70b98e54160bd632b404d329951d371d8fe647bd', {
        maxFeePerGas: 6500000000n,
    });

Contract ABI

- Non relevant.

Errors

TypeError: invalid BytesLike value (argument="value", value=60000000015, code=INVALID_ARGUMENT, version=6.13.4)

Environment

Altcoin - Please specify (e.g. Polygon)

Environment (Other)

Polygon Amoy