useEstimateFees returns "Invalid Params, missing non-optional param: simulation_flags"

[TudorEsan]

If I try to get the estimated fee I get this rpc error. Additionaly the useEstimateFees hook does not give a ts error that I need to fill other required parameters

rpc error:

{
    "jsonrpc": "2.0",
    "id": 0,
    "error": {
        "code": -32602,
        "message": "Invalid Params",
        "data": "missing non-optional param: simulation_flags"
    }
}

  const calls = useMemo(() => {
    if (!address || !contract) return [];
    const nominatedAmount = nominateNumber(
      formValues.amount,
      formValues.token.decimals
    );

    return contract.populateTransaction.transfer(
      formValues.toAddress,
      cairo.uint256(nominatedAmount)
    );
  }, [contract, address]);

  const { data: fee, isLoading: isFeeLoading } = useEstimateFees({
    calls,
    watch: true,
  });

[WhizIkem]

Hi there,

I've done some research on the useEstimateFees hook and encountered information regarding missing parameters, specifically simulation_flags. It seems this might be causing the issue. I'm interested in contributing to resolving this problem. Could you provide more details or confirm if this parameter needs to be included?

Looking forward to collaborating on this!

Best, WhiZ

[Benjtalkshow]

Hello @TudorEsan,

I am an experienced JavaScript developer, and after my research on this issue, I can assure you that I can take it:

My Analysis

The error message suggests that the simulation_flags parameter, which is non-optional, is missing from the request. This parameter is likely required by the RPC endpoint but is not being included in the useEstimateFees call.

My Proposed Solution

• Include the Missing Parameter: Ensure that the simulation_flags parameter is included in the useEstimateFees hook call. This might involve modifying the hook to accept this parameter and pass it along with the request.

• Update the Hook Usage: Update the component where useEstimateFees is used to provide the necessary simulation_flags.

• TypeScript Enhancements: Enhance the TypeScript definitions to ensure that missing required parameters, like simulation_flags, are flagged by TypeScript. This will help prevent similar issues in the future.

Thank you, and I am looking forward to getting assigned to this task.

[fracek]

What RPC version are you using? It could be you're using an RPC version (0.7) that's newer than what's supported by starknet react v2 (RPC 0.6).

[TudorEsan]

yes im using the latest blast version prob its 0.7. thanks for answering i ll mark it as closed!