Upgrade from 0.2.8 to 0.3.12 leads to incorrect multicall return results

[t0rbik]

Is there an existing issue for this?

• I have searched the existing issues

Package Version

0.2.8 and 0.3.12

Current Behavior

I expect this piece of code to work accordingly to types defined.
As it stands first call in multicall should return type [bigint, bigint]. Unfortunately, after upgrading to 0.3.12 in order to fix incorrect peer deps in wagmi@next, this piece of code throws an error. Bumping back to 0.2.8 fixes it.

const [[lockedAmount, lockedEnd], lockValue, voted] =
            await viemClient.multicall({
              allowFailure: false,
              multicallAddress: CONTRACTS.MULTICALL_ADDRESS,
              contracts: [
                {
                  ...vestingContract,
                  functionName: "locked",
                  args: [tokenIndex],
                },
                {
                  ...vestingContract,
                  functionName: "balanceOfNFT",
                  args: [tokenIndex],
                },
                {
                  ...vestingContract,
                  functionName: "voted",
                  args: [tokenIndex],
                },
              ],
            });

Here's the error message:

TypeError: Invalid attempt to destructure non-iterable instance. In order to be iterable, non-array objects must have a Symbol.iterator method.

Expected Behavior

I expect the piece of code mentioned above return proper multicall results.

Steps To Reproduce

I reckon you can reproduce by making a multicall in which one of calls returns an array of fixed number of elements

Link to Minimal Reproducible Example (StackBlitz, CodeSandbox, GitHub repo etc.)

No response

Anything else?

I think it's related to #398

Types are displayed correctly

I can do a minimal example, but in the nearest future

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