Error: unexpected character "_" at position xx in " address payable _add"

[thecircleoflifefree]

My const abi includes among others, this signature which it complaints about. If I remove it no error received at the console.log.

function withdraw(uint256 _cD, address payable _add, uint8 _abc) public"

The abi is used in the new ethers.Contract()

From your abi_coder(I dont recall exactly if that was the name of the module) I tried fidgetting with variables below as it appears this is the culprit behind the complaint (educated assumption):

let paramTypeBytes = new RegExp(/^bytes([0-9]*)$/);
let paramTypeNumber = new RegExp(/^(u?int)([0-9]*)$/);
let paramTypeArray = new RegExp(/^(.*)\[([0-9]*)\]$/);

but did not reach a particular conclusion.

Am I doing something wrong? What approach should I take to troubleshoot this?

Best Regards

[ricmoo]

Is this in the v4 or v5 branch? I believe the v4 branch may have an issue with the payable modifier...

[thecircleoflifefree]

I am using src="https://cdn.ethers.io/scripts/ethers-v4.min.js , however changing this to (v5) src="https://cdn.ethers.io/scripts/ethers-v5.min.js is not valid

[thecircleoflifefree]

I cannot advance without this; came here because web3js has many other substantial issues. You mention a possible "issue with the payable modifier" what is an accepted workaround?

[ricmoo]

Just remove the word payable. :)

It isn’t used by the ABI encoder. Basically, it thinks the word payable is the name of the variable, so it’s seeing uint foo bar, not realizing the middle word is not part of the grammar. It’s just a semantic hint to Solidity. So it doesn’t matter. The v4 parser was based on a much older version of solidity.

If you update to v5, which is in beta (you can download and serve the dist file yourself, which for security reasons is more recommended) it will work fine.

But for v4, simply removing the word payable should be fine.

Sorry for the delay, I was until recently stranded in the EU, but 4 airports later (and an incredibly expensive ticket), I am now safely back in Canada. I’ll be getting the issues more responded to tomorrow as I’m now in quarantine for 14 days, so what else is there to do? :)

[thecircleoflifefree]

Glad to see you are ok, thanks for replying back. Removed payable as per your suggestion and no further issues =)

[ricmoo]

Awesome! I should add a note for this is the v4 docs too. :)

Thanks! :)