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Mutation hook for calling state-changing contract functions using a Viem WalletClient from useParaViemClient.
Requires @getpara/viem-v2-integration and viem as peer dependencies.
Get the viemClient parameter from useParaViemClient.

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Import

import { useParaViemWriteContract } from "@getpara/react-native-wallet/evm/viem";

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Usage

import { useParaViemClient, useParaViemWriteContract } from "@getpara/react-native-wallet/evm/viem";
import { sepolia } from "viem/chains";
import { http, parseUnits } from "viem";

function TransferTokens() {
  const { viemClient } = useParaViemClient({
    walletClientConfig: { chain: sepolia, transport: http() },
  });

  const { writeContractAsync, isPending } = useParaViemWriteContract(viemClient);

  const handleTransfer = async () => {
    const hash = await writeContractAsync({
      address: "0xTokenAddress...",
      abi: ERC20_ABI,
      functionName: "transfer",
      args: ["0xRecipient...", parseUnits("10", 18)],
    });
    console.log("Tx hash:", hash);
  };

  return (
    <button onClick={handleTransfer} disabled={isPending}>
      {isPending ? "Sending..." : "Transfer Tokens"}
    </button>
  );
}
mutate/mutateAsync are also available alongside the named aliases. All other UseMutationResult fields (data, error, isSuccess, isError, reset, etc.) work as expected.