Web3Auth Package Signer BigInt Problems

[chalabi2]

Summary

In the web3auth extension directory the hashObject Signing a transaction errors when a message contains bigIntValues because they cannot be serialized.

Error

Failed to broadcast: TypeError: BigInt value can't be serialized in JSON
    hashObject utils.js:67
    signDirect signer.js:68
    signDirect signingstargateclient.js:282
    sign signingstargateclient.js:230
    tx useTx.tsx:84
    handleConfirm ConfirmationForm.tsx:89

Reproduce

• install and run dev

  git clone https://github.com/chalabi2/manifest-app
  cd manifest-app
  git checkout main
  yarn install
  yarn run dev

• connect via web3auth social wallet option

• visit /factory/create

• attempt to create a token

Working solution

Simply check if there are any bigInt values in the hashObject

export const hashObject = (object) => {
    const replacer = (_, value) => {
      if (typeof value === 'bigint') {
        return value.toString();
      }
      return value;
    };

    return Buffer.from(sha256(toUtf8(JSON.stringify(object, replacer))));
  };

[chalabi2]

489 is a potential fix