general - Unable to use 0x libraries: 'cannot read property slice of undefined'

[the-jackalope]

Doing almost anything that makes requests to the network with the latest release of various 0x libraries results in the same error. The easiest to demonstrate is the contract-wrappers repo - I expect to retrieve a public address's ZRX token balance on the mainnet with the following code:

const Web3 = require('web3');
const provider = new Web3.providers.HttpProvider('http://provider-url-here');

const { ContractWrappers } = require('@0x/contract-wrappers');
const  contractWrappers = new ContractWrappers(provider, { networkId: 1 });

contractWrappers.erc20Token.getBalanceAsync('ZRX_ADDRESS_HERE', 'ANY_ETHEREUM_ADDRESS_HERE').then(console.log).catch(console.error)

Which consistently yield the following error:

> TypeError: Cannot read property 'slice' of undefined
    at Function.BaseContract._throwIfRevertWithReasonCallResult (/Users/johngcook/Developer/fetch/desktop/node_modules/@0x/base-contract/lib/src/index.js:169:27)
    at ERC20TokenContract.<anonymous> (/Users/johngcook/Developer/fetch/desktop/node_modules/@0x/contract-wrappers/node_modules/@0x/abi-gen-wrappers/lib/src/generated-wrappers/erc20_token.js:428:62)
    at step (/Users/johngcook/Developer/fetch/desktop/node_modules/@0x/contract-wrappers/node_modules/@0x/abi-gen-wrappers/lib/src/generated-wrappers/erc20_token.js:56:23)
    at Object.next (/Users/johngcook/Developer/fetch/desktop/node_modules/@0x/contract-wrappers/node_modules/@0x/abi-gen-wrappers/lib/src/generated-wrappers/erc20_token.js:37:53)
    at fulfilled (/Users/johngcook/Developer/fetch/desktop/node_modules/@0x/contract-wrappers/node_modules/@0x/abi-gen-wrappers/lib/src/generated-wrappers/erc20_token.js:28:58)
    at process.internalTickCallback (internal/process/next_tick.js:77:7)

Whereas I expect to get the address's token balance. I don't believe it to be an issue with the provider as I can instantiate a Web3 instance with the provider and use it to correctly query the address's ETH balance.

@0x/contract-wrappers: 10.1.0
web3: 1.0.0-beta.55

[DonGambas]

I'm experiencing the same exact issue.

[fabioberger]

Thanks for the report @the-jackalope @DonGambas. I just tried to reproducing the issue on the latest release, and it works as expected:

const Web3 = require('web3');
const provider = new Web3.providers.HttpProvider('https://mainnet.0x.org/');

const { ERC20TokenContract } = require('@0x/contract-wrappers');

const erc20 = new ERC20TokenContract('0xe41d2489571d322189246dafa5ebde1f4699f498', provider)

erc20.balanceOf.callAsync('0xBa12F51a5EeCB92bB366e9Bf36e11024199F35A1').then(console.log).catch(console.error)

Since this was a major version bump for the library and introduced quite a big change to the public interface, we put together this upgrade guide: #2040

[DonGambas]

@fabioberger thanks for the response, I initially installed the packaged with npm, when I installed them with yarn there was no issue 🤦‍♂

I have one additional question re: the upgrade guide. All of the order validation functions got moved to the order-utils package. It would be helpful to see an example of how to use the order validation utils in the order-utils package in particular how to set up the exchangeTradeEmulator.

[fabioberger]

@DonGambas glad you were able to get that sorted.

Which order validation method are you using and what precisely is your use-case?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

This issue has been automatically closed because no activity occured in 7 days after being marked as stale. If it's still relevant - feel free to reopen. Thank you for your contributions.