Fail to create contract instance from Contract with non-payable and non-constant function in ethers v5.0-beta

[ddaws]

I am attempting to create an instance of a UniswapExchange contract though am getting the following error

Error: cannot have constant payable function

thrown here in verifyState.

The UniswapExchange contract has a non-payable, non-constant function called setup called once in the lifetime of the contract. verifyState seems to be asserting that a contract must either be payable, or be constant, but I believe (still learning a lot) it is valid for a contract function to be both non-payable and non-constant.

verifyState sets result.constant to !result.payable here

For reference, here is the deployed Uniswap MKR exchange contract
https://etherscan.io/address/0x2C4Bd064b998838076fa341A83d007FC2FA50957

[ricmoo]

@ddaws Can you include the ABI you are passing into Contract?

[ricmoo]

Thanks for your help in tracking down the problem and links the problematic code.

This has been fixed in 5.0.0-beta.180. Let me know if you still have any problems.

Thanks! :)

[ddaws]

Happy to help, and thanks for getting this fixed